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| -rw-r--r-- | AUTHORS | 3 | ||||
| -rw-r--r-- | COPYING | 504 | ||||
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | INSTALL | 7 | ||||
| -rw-r--r-- | Makefile.am | 19 | ||||
| -rw-r--r-- | NEWS | 0 | ||||
| -rw-r--r-- | README | 1 | ||||
| -rw-r--r-- | VERSION | 1 | ||||
| -rw-r--r-- | configure.ac | 50 | ||||
| -rw-r--r-- | include/rin/diagnostic.h | 29 | ||||
| -rw-r--r-- | include/rin/float.h | 66 | ||||
| -rw-r--r-- | include/rin/float_types.h | 157 | ||||
| -rw-r--r-- | src/Makefile.am | 42 | ||||
| -rw-r--r-- | src/diagnostic/Makefile.am | 27 | ||||
| -rw-r--r-- | src/diagnostic/diagnostic.c | 59 | ||||
| -rw-r--r-- | src/diagnostic/diagnostic_private.h | 29 | ||||
| -rw-r--r-- | src/dummy.c | 0 | ||||
| -rw-r--r-- | src/float/Makefile.am | 26 | ||||
| -rw-r--r-- | src/float/float.c | 248 | ||||
| -rw-r--r-- | src/float/float_private.h | 29 | ||||
| -rw-r--r-- | test/Makefile.am | 72 | ||||
| -rw-r--r-- | test/diagnostic.c | 28 | ||||
| -rw-r--r-- | test/diagnostic_test.h | 26 | ||||
| -rw-r--r-- | test/diagnostic_test_private.h | 26 | ||||
| -rw-r--r-- | test/float.c | 172 | ||||
| -rw-r--r-- | test/float_test.h | 28 | ||||
| -rw-r--r-- | test/float_test_private.h | 37 | ||||
| -rw-r--r-- | test/main.c | 38 | ||||
| -rw-r--r-- | test/test.c | 38 | ||||
| -rw-r--r-- | test/test.h | 35 |
30 files changed, 1804 insertions, 0 deletions
@@ -0,0 +1,3 @@ +The Rin Library was brought to you thanks to the work of: + +Gediminas Jakutis @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..af3e1e9 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,7 @@ +The Rin Library changes +======================= + +Version 0.0.1 +------------- + +- Initial commit @@ -0,0 +1,7 @@ +Installation Instructions +========================= + +1. Creaate configure scripts with 'autoreconf -iv' +2. Run './configure' +3. Run 'make -jN' where 'N' is number of CPU cores + 1 +4. run 'make install' diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..1c226f6 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,19 @@ +# Copyright (C) 2015 Gediminas Jakutis +# +# This Makefile.am is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; version 2.1 +# of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + +SUBDIRS = src test + +ACLOCAL_AMFLAGS = -I m4 @@ -0,0 +1 @@ +Note: the API is _very_ unstable, for now @@ -0,0 +1 @@ +0.0.1 diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..8241db8 --- /dev/null +++ b/configure.ac @@ -0,0 +1,50 @@ +dnl Copyright (C) 2015 Gediminas Jakutis +dnl +dnl This configure.ac is free software; you can redistribute it and/or +dnl modify it under the terms of the GNU Lesser General Public +dnl License as published by the Free Software Foundation; version 2.1 +dnl of the License. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +dnl Lesser General Public License for more details. +dnl +dnl You should have received a copy of the GNU Lesser General Public +dnl License along with this library; if not, write to the Free Software +dnl Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + +# Process this file with autoconf to produce a configure script. + +AC_PREREQ([2.13]) + +m4_define(LIBRIN_VERSION, m4_normalize(m4_include(VERSION))) +AC_INIT([librin], [LIBRIN_VERSION], [gediminas@varciai.lt]) +AC_CONFIG_SRCDIR([src/float/float.c]) +AC_CONFIG_HEADERS([config.h]) +AC_CONFIG_MACRO_DIRS([m4]) + +# Checks for programs. +AC_PROG_CC +AC_PROG_INSTALL +AM_INIT_AUTOMAKE +LT_INIT + +# Checks for header files. +AC_CHECK_HEADERS([inttypes.h stdio.h stdint.h stdlib.h string.h]) + +# Checks for typedefs, structures, and compiler characteristics. +AC_TYPE_INT32_T +AC_TYPE_INT64_T +AC_TYPE_SIZE_T +AC_TYPE_UINT32_T +AC_TYPE_UINT64_T + +# Checks for library functions. + +AC_CONFIG_FILES([Makefile + src/Makefile + src/diagnostic/Makefile + src/float/Makefile + test/Makefile]) +AC_OUTPUT diff --git a/include/rin/diagnostic.h b/include/rin/diagnostic.h new file mode 100644 index 0000000..aeff035 --- /dev/null +++ b/include/rin/diagnostic.h @@ -0,0 +1,29 @@ +/* + * The Rin Library – diagnostics module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_DIAGNOSTIC_INCLUDED +#define LIBRIN_DIAGNOSTIC_INCLUDED + +void rin_err(const char *format, ...); +void rin_fixme(const char *format, ...) +void rin_warn(const char *format, ...); +void rin_info(const char *format, ...); + +#endif /* LIBRIN_DIAGNOSTIC_INCLUDED */ diff --git a/include/rin/float.h b/include/rin/float.h new file mode 100644 index 0000000..afd63f5 --- /dev/null +++ b/include/rin/float.h @@ -0,0 +1,66 @@ +/* + * The Rin Library – floating point module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_FLOAT_INCLUDED +#define LIBRIN_FLOAT_INCLUDED + +#include <stdint.h> +#include <rin/float_types.h> + +/* + * TODO: + * · weak aliasing + * · more modes + */ + +static const unsigned int RIN_HEXSTRING_DEFAULT = 0x00000000u; +static const unsigned int RIN_HEXSTRING_NOPREFIX = 0x00000001u; + +/* + * All following the functions assume IEEE 754 floating point numbers + * and thus are only expected to work only on systems which use IEEE 754. + * + * The versions suffixed with "d" / double versions are otherwise + * identical to the float counterparts. + */ + +uint32_t rin_signbitf(const float num); +uint64_t rin_signbitd(const double num); + +char *rin_float_to_hexstring(const float num, char *str, unsigned int mode); +char *rin_double_to_hexstring(const double num, char *str, unsigned int mode); + +unsigned int rin_compare_float(const float a, const float b, uint32_t max_ulps); +unsigned int rin_compare_vec2(const struct vec2 a, const struct vec2 b, uint32_t max_ulps); +unsigned int rin_compare_vec3(const struct vec3 a, const struct vec3 b, uint32_t max_ulps); +unsigned int rin_compare_vec4(const struct vec4 a, const struct vec4 b, uint32_t max_ulps); + +unsigned int rin_compare_double(const double a, const double b, uint64_t max_ulps); +unsigned int rin_compare_vec2d(const struct vec2d a, const struct vec2d b, uint64_t max_ulps); +unsigned int rin_compare_vec3d(const struct vec3d a, const struct vec3d b, uint64_t max_ulps); +unsigned int rin_compare_vec4d(const struct vec4d a, const struct vec4d b, uint64_t max_ulps); + +uint32_t rin_float_to_uint(const float num); +int32_t rin_float_to_int(const float num); + +uint64_t rin_double_to_ulong(const double num); +int64_t rin_double_to_long(const double num); + +#endif /* LIBRIN_FLOAT_INCLUDED */ diff --git a/include/rin/float_types.h b/include/rin/float_types.h new file mode 100644 index 0000000..2d99b2f --- /dev/null +++ b/include/rin/float_types.h @@ -0,0 +1,157 @@ +/* + * The Rin Library – floating point module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_FLOAT_TYPES_INCLUDED +#define LIBRIN_FLOAT_TYPES_INCLUDED + +/* These vec[num] types mostly mimic the analogous types found in OpenGL + * Might get renamed to rin_vec[num] in case namespace clashes + * with other existing libraries get noticed. + * + * vecd[num] use double instead of float, but are otherwise identical to vec[num]. + */ + +struct vec2 { + union { + struct { + float x; + float y; + }; + struct { + float r; + float g; + }; + struct { + float s; + float t; + }; + }; +}; + +struct vec3 { + union { + struct { + float x; + float y; + float z; + }; + struct { + float r; + float g; + float b; + }; + struct { + float s; + float t; + float p; + }; + }; +}; + +struct vec4 { + union { + struct { + float x; + float y; + float z; + float w; + }; + struct { + float r; + float g; + float b; + float a; + }; + struct { + float s; + float t; + float p; + float q; + }; + }; +}; + +struct vec2d { + union { + struct { + double x; + double y; + }; + struct { + double r; + double g; + }; + struct { + double s; + double t; + }; + }; +}; + +struct vec3d { + union { + struct { + double x; + double y; + double z; + }; + struct { + double r; + double g; + double b; + }; + struct { + double s; + double t; + double p; + }; + }; +}; + +struct vec4d { + union { + struct { + double x; + double y; + double z; + double w; + }; + struct { + double r; + double g; + double b; + double a; + }; + struct { + double s; + double t; + double p; + double q; + }; + }; +}; + +/* A simple 3D vertex with position and normal data. */ +struct vertex { + struct vec3 position; + struct vec3 normal; +}; + +#endif /* LIBRIN_FLOAT_TYPES_INCLUDED */ diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..3b8b43c --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,42 @@ +# Copyright (C) 2015 Gediminas Jakutis +# +# This Makefile.am is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; version 2.1 +# of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + +SUBDIRS = float diagnostic + +AM_CFLAGS = \ + -I$(top_srcdir)/include/ \ + -Wall \ + -Wextra + +RIN_VER_MAJOR = 0 +RIN_VER_MINOR = 0 +RIN_VER_PATCH = 0 + +lib_LTLIBRARIES = librin.la + +librin_la_LDFLAGS = -version-info $(RIN_VER_MAJOR):$(RIN_VER_MINOR):$(RIN_VER_PATCH) + +librin_la_SOURCES = dummy.c + +librin_la_LIBADD = \ + float/librin_float.la \ + diagnostic/librin_diagnostic.la + +librin_includedir = $(includedir)/rin +librin_include_HEADERS = \ + $(top_srcdir)/include/rin/float.h \ + $(top_srcdir)/include/rin/float_types.h \ + $(top_srcdir)/include/rin/diagnostic.h diff --git a/src/diagnostic/Makefile.am b/src/diagnostic/Makefile.am new file mode 100644 index 0000000..8787230 --- /dev/null +++ b/src/diagnostic/Makefile.am @@ -0,0 +1,27 @@ + +# Copyright (C) 2015 Gediminas Jakutis +# +# This Makefile.am is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; version 2.1 +# of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + +AM_CFLAGS = \ + -I$(top_srcdir)/include/ \ + -Wall \ + -Wextra + +noinst_LTLIBRARIES = librin_diagnostic.la + +librin_diagnostic_la_SOURCES = \ + diagnostic.c \ + diagnostic_private.h diff --git a/src/diagnostic/diagnostic.c b/src/diagnostic/diagnostic.c new file mode 100644 index 0000000..0648abe --- /dev/null +++ b/src/diagnostic/diagnostic.c @@ -0,0 +1,59 @@ +/* + * The Rin Library – diagnostics module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "diagnostic_private.h" + +void rin_err(const char *format, ...) +{ + va_list args; + + va_start(args, format); + __rin_msg(stderr, "error", format, args); +} + +void rin_warn(const char *format, ...) +{ + va_list args; + + va_start(args, format); + __rin_msg(stderr, "warning", format, args); +} + +void rin_fixme(const char *format, ...) +{ + va_list args; + + va_start(args, format); + __rin_msg(stderr, "fixme", format, args); +} + +void rin_info(const char *format, ...) +{ + va_list args; + + va_start(args, format); + __rin_msg(stdout, "info", format, args); +} + +static void __rin_msg(FILE *stream, const char *prefix, const char *format, va_list args) +{ + fprintf(stream, "%s: ", prefix); + vfprintf(stream, format, args); +} diff --git a/src/diagnostic/diagnostic_private.h b/src/diagnostic/diagnostic_private.h new file mode 100644 index 0000000..284d2e7 --- /dev/null +++ b/src/diagnostic/diagnostic_private.h @@ -0,0 +1,29 @@ +/* + * The Rin Library – diagnostics module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_DIAGNOSTIC_PRIVATE_INCLUDED +#define LIBRIN_DIAGNOSTIC_PRIVATE_INCLUDED + +#include <stdio.h> +#include <stdarg.h> + +static void __rin_msg(FILE *stream, const char *prefix, const char *format, va_list args); + +#endif /* LIBRIN_DIAGNOSTIC_PRIVATE_INCLUDED */ diff --git a/src/dummy.c b/src/dummy.c new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/src/dummy.c diff --git a/src/float/Makefile.am b/src/float/Makefile.am new file mode 100644 index 0000000..d8d2675 --- /dev/null +++ b/src/float/Makefile.am @@ -0,0 +1,26 @@ +# Copyright (C) 2015 Gediminas Jakutis +# +# This Makefile.am is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; version 2.1 +# of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + +AM_CFLAGS = \ + -I$(top_srcdir)/include/ \ + -Wall \ + -Wextra + +noinst_LTLIBRARIES = librin_float.la + +librin_float_la_SOURCES = \ + float.c \ + float_private.h diff --git a/src/float/float.c b/src/float/float.c new file mode 100644 index 0000000..97fcb41 --- /dev/null +++ b/src/float/float.c @@ -0,0 +1,248 @@ +/* + * The Rin Library – floating point module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "rin/float.h" +#include "rin/float_types.h" +#include "float_private.h" + +/* + * TODO: + * · Doxygen-ize comments + * · Diagnostics + * · moar portability + * · ?? + */ + +/* + * signbit functions return the sign bit of a floating point number + * in the position where it is found on the raw float data itself. + * Set sign bit means it is negative + */ +uint32_t rin_signbitf(const float num) +{ + uint32_t ret; + ret = rin_float_to_uint(num); + return ret & 0x80000000u; +} + +uint64_t rin_signbitd(const double num) +{ + uint64_t ret; + ret = rin_double_to_ulong(num); + return ret & 0x8000000000000000ull; +} + +/* + * hexstring functions format a string of the hexidecimal representation + * of the raw floating point number data + * + * str has to point to enough memory to hold the said string + * + * mode hold modebits. Has to be either RIN_HEXSTRING_DEFAULT or any of + * the available modes ORed togther. + * Only one non-default mode is available at the moment. + */ + +char *rin_float_to_hexstring(const float num, char *str, unsigned int mode) +{ + char buffer[16] = { '\0' }; + uint32_t tmp; + size_t ccnt; + + tmp = rin_float_to_uint(num); + ccnt = sprintf(buffer, "%x", tmp); + + if (mode & RIN_HEXSTRING_NOPREFIX) { + memcpy(str, "00000000", 9); + memcpy(&str[8 - ccnt], buffer, ccnt); + } else { + memcpy(str, "0x00000000", 11); + memcpy(&str[10 - ccnt], buffer, ccnt); + } + + return str; +} + +char *rin_double_to_hexstring(const double num, char *str, unsigned int mode) +{ + char buffer[32] = { '\0' }; + uint64_t tmp; + size_t ccnt; + + tmp = rin_double_to_ulong(num); + ccnt = sprintf(buffer, "%lx", tmp); + + if (mode & RIN_HEXSTRING_NOPREFIX) { + memcpy(str, "0000000000000000", 17); + memcpy(&str[16 - ccnt], buffer, ccnt); + } else { + memcpy(str, "0x0000000000000000", 19); + memcpy(&str[18 - ccnt], buffer, ccnt); + } + + return str; +} + +/* + * These comparison functions use Units In Last Place (ULPs) to check if the numbers + * are close enough to be considered equal, which addresses most shortcomings of + * epsilon-based comparison. + * + * TODO: Still not implemented optimally and can produce results worse than epsilon + * comparison in some situations. + */ + +unsigned int rin_compare_float(const float a, const float b, uint32_t max_ulps) +{ + /* in case signs differ, "regular" comparison makes no sense */ + if (rin_signbitf(a) != rin_signbitf(b)) { + /* unless it's a case of a signed zero, so check for that */ + if (a == b) { + return 0; + } else { + return 1; + } + } else { + return ((uint32_t) abs(rin_float_to_int(a) - rin_float_to_int(b))) > max_ulps; + } +} + +unsigned int rin_compare_vec2(const struct vec2 a, const struct vec2 b, uint32_t max_ulps) +{ + unsigned int ret; + + ret = rin_compare_float(a.x, b.x, max_ulps); + ret += rin_compare_float(a.y, b.y, max_ulps); + + return ret; +} + +unsigned int rin_compare_vec3(const struct vec3 a, const struct vec3 b, uint32_t max_ulps) +{ + unsigned int ret; + + ret = rin_compare_float(a.x, b.x, max_ulps); + ret += rin_compare_float(a.y, b.y, max_ulps); + ret += rin_compare_float(a.z, b.z, max_ulps); + + return ret; +} + +unsigned int rin_compare_vec4(const struct vec4 a, const struct vec4 b, uint32_t max_ulps) +{ + unsigned int ret; + + ret = rin_compare_float(a.x, b.x, max_ulps); + ret += rin_compare_float(a.y, b.y, max_ulps); + ret += rin_compare_float(a.z, b.z, max_ulps); + ret += rin_compare_float(a.w, b.w, max_ulps); + + return ret; +} + +unsigned int rin_compare_double(const double a, const double b, uint64_t max_ulps) +{ + /* in case signs differ, "regular" comparison makes no sense */ + if (rin_signbitd(a) != rin_signbitd(b)) { + /* unless it's a case of a signed zero, so check for that */ + if (a == b) { + return 0; + } else { + return 1; + } + } else { + return ((uint64_t) labs(rin_double_to_long(a) - rin_double_to_long(b))) > max_ulps; + } +} + +unsigned int rin_compare_vec2d(const struct vec2d a, const struct vec2d b, uint64_t max_ulps) +{ + unsigned int ret; + + ret = rin_compare_double(a.x, b.x, max_ulps); + ret += rin_compare_double(a.y, b.y, max_ulps); + + return ret; +} + +unsigned int rin_compare_vec3d(const struct vec3d a, const struct vec3d b, uint64_t max_ulps) +{ + unsigned int ret; + + ret = rin_compare_double(a.x, b.x, max_ulps); + ret += rin_compare_double(a.y, b.y, max_ulps); + ret += rin_compare_double(a.z, b.z, max_ulps); + + return ret; +} + +unsigned int rin_compare_vec4d(const struct vec4d a, const struct vec4d b, uint64_t max_ulps) +{ + unsigned int ret; + + ret = rin_compare_double(a.x, b.x, max_ulps); + ret += rin_compare_double(a.y, b.y, max_ulps); + ret += rin_compare_double(a.z, b.z, max_ulps); + ret += rin_compare_double(a.w, b.w, max_ulps); + + return ret; +} + +/* + * These [float_type]_to_[integer_type] functions do type punning in a + * standards-compliant / without invoking undefined behavior, which + * happens in most of the [sadly] widely used methods to do this. + */ + +uint32_t rin_float_to_uint(const float num) +{ + uint32_t ret; + + memcpy(&ret, &num, sizeof(num)); + + return ret; +} + +int32_t rin_float_to_int(const float num) +{ + int32_t ret; + + memcpy(&ret, &num, sizeof(num)); + + return ret; +} + +uint64_t rin_double_to_ulong(const double num) +{ + uint64_t ret; + + memcpy(&ret, &num, sizeof(num)); + + return ret; +} + +int64_t rin_double_to_long(const double num) +{ + int64_t ret; + + memcpy(&ret, &num, sizeof(num)); + + return ret; +} diff --git a/src/float/float_private.h b/src/float/float_private.h new file mode 100644 index 0000000..4eed70b --- /dev/null +++ b/src/float/float_private.h @@ -0,0 +1,29 @@ +/* + * The Rin Library – floating point module + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_FLOAT_PRIVATE_INCLUDED +#define LIBRIN_FLOAT_PRIVATE_INCLUDED + +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <stdio.h> + +#endif /* LIBRIN_FLOAT_PRIVATE_INCLUDED */ diff --git a/test/Makefile.am b/test/Makefile.am new file mode 100644 index 0000000..65e6c2c --- /dev/null +++ b/test/Makefile.am @@ -0,0 +1,72 @@ +# Copyright (C) 2015 Gediminas Jakutis +# +# This Makefile.am is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; version 2.1 +# of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + +AM_CFLAGS = \ + -I$(top_srcdir)/include/ \ + -Wall \ + -Wextra + +check_PROGRAMS = test +check_LTLIBRARIES = \ + libtest.la \ + libfloat_test.la \ + libdiagnostic_test.la + +# test program +test_LDADD = \ + libtest.la \ + libfloat_test.la \ + libdiagnostic_test.la + +test_SOURCES = \ + main.c \ + test.h \ + float_test.h \ + diagnostic_test.h + +# test lib +libtest_la_SOURCES = \ + test.c \ + test.h + +# float module test +libfloat_test_la_SOURCES = \ + float.c \ + float_test.h \ + float_test_private.h \ + test.h + +libfloat_test_la_LIBADD = \ + libtest.la \ + $(top_srcdir)/src/librin.la + +# diagnostic module test +libdiagnostic_test_la_SOURCES = \ + diagnostic.c \ + diagnostic_test.h \ + diagnostic_test_private.h \ + test.h + +libdiagnostic_test_la_LIBADD = \ + libtest.la \ + $(top_srcdir)/src/librin.la + +noinst_HEADERS = \ + test.h \ + float_test.h \ + float_test_private.h \ + diagnostic_test.h \ + diagnostic_test_private.h diff --git a/test/diagnostic.c b/test/diagnostic.c new file mode 100644 index 0000000..f8a2bd4 --- /dev/null +++ b/test/diagnostic.c @@ -0,0 +1,28 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "test.h" +#include "diagnostic_test_private.h" + +struct test_results diagnostic_test(void) +{ + /* basically a NOOP */ + return ok(0, ""); +} diff --git a/test/diagnostic_test.h b/test/diagnostic_test.h new file mode 100644 index 0000000..e8f2967 --- /dev/null +++ b/test/diagnostic_test.h @@ -0,0 +1,26 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_DIAGNOSTIC_TEST_INCLUDED +#define LIBRIN_DIAGNOSTIC_TEST_INCLUDED + +struct test_results diagnostic_test(void); + +#endif /* LIBRIN_DIAGNOSTIC_TEST_INCLUDED */ diff --git a/test/diagnostic_test_private.h b/test/diagnostic_test_private.h new file mode 100644 index 0000000..ad2aa43 --- /dev/null +++ b/test/diagnostic_test_private.h @@ -0,0 +1,26 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_DIAGNOSTIC_TEST_PRIVATE_INCLUDED +#define LIBRIN_DIAGNOSTIC_TEST_PRIVATE_INCLUDED + +/* NOOP */ + +#endif /* LIBRIN_DIAGNOSTIC_TEST_PRIVATE_INCLUDED */ diff --git a/test/float.c b/test/float.c new file mode 100644 index 0000000..9940ff4 --- /dev/null +++ b/test/float.c @@ -0,0 +1,172 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "test.h" +#include "float_test_private.h" + +struct test_results float_test(void) +{ + struct test_results ret; + + ret = rin_signbitf_test(); + ret = rin_signbitd_test(); + ret = rin_float_to_hexstring_test(); + ret = rin_double_to_hexstring_test(); + ret = rin_compare_float_test(); + ret = rin_compare_double_test(); + + return ret; +} + +static struct test_results rin_signbitf_test(void) +{ + struct test_results ret; + size_t i; + static const float in[] = { 1.0f, -1.0f, 987656.4321f, -987656.4321f }; + static const uint32_t expected[] = { 0, 0x80000000u, 0, 0x80000000u }; + + for (i = 0; i < 4; ++i) { + ret = ok(rin_signbitf(in[i]) != expected[i], + "%s: expected: %"PRIu32", got: %"PRIu32" (%1.8e)", + __func__, + expected[i], + rin_signbitf(in[i]), + in[i]); + } + + return ret; +} + +static struct test_results rin_signbitd_test(void) +{ + struct test_results ret; + size_t i; + static const double in[] = { 1.0, -1.0, 987656.4321, -987656.4321 }; + static const uint64_t expected[] = { 0, 0x8000000000000000ull, 0, 0x8000000000000000ull }; + + for (i = 0; i < 4; ++i) { + ret = ok(rin_signbitd(in[i]) != expected[i], + "%s: expected: %"PRIu64", got: %"PRIu64" (%1.16e)", + __func__, + expected[i], + rin_signbitf(in[i]), + in[i]); + } + + return ret; +} + +static struct test_results rin_float_to_hexstring_test(void) +{ + struct test_results ret; + size_t i; + static const float in[] = { 1.0f, -1.0f, 98765.4321f, -98765.4321f }; + static const char *expected_default[] = { "0x3f800000", "0xbf800000", "0x47c0e6b7", "0xc7c0e6b7" }; + static const char *expected_noprefix[] = { "3f800000", "bf800000", "47c0e6b7", "c7c0e6b7" }; + char buffer[16] = { '\0' }; + + for (i = 0; i < 4; ++i) { + ret = ok(strcmp(rin_float_to_hexstring(in[i], buffer, RIN_HEXSTRING_DEFAULT), expected_default[i]), + "%s: expected: %s, got: %s (%1.8e)", + __func__, + expected_default[i], + rin_float_to_hexstring(in[i], buffer, RIN_HEXSTRING_DEFAULT), + in[i]); + + ret = ok(strcmp(rin_float_to_hexstring(in[i], buffer, RIN_HEXSTRING_NOPREFIX), expected_noprefix[i]), + "%s: expected: %s, got: %s (%1.8e)", + __func__, + expected_noprefix[i], + rin_float_to_hexstring(in[i], buffer, RIN_HEXSTRING_NOPREFIX), + in[i]); + } + + return ret; +} + + +static struct test_results rin_double_to_hexstring_test(void) +{ + struct test_results ret; + size_t i; + static const double in[] = { 1.0, -1.0, 98765.4321, -98765.4321 }; + static const char *expected_default[] = { "0x3ff0000000000000", "0xbff0000000000000", "0x40f81cd6e9e1b08a", "0xc0f81cd6e9e1b08a" }; + static const char *expected_noprefix[] = { "3ff0000000000000", "bff0000000000000", "40f81cd6e9e1b08a", "c0f81cd6e9e1b08a" }; + char buffer[32] = { '\0' }; + + for (i = 0; i < 4; ++i) { + ret = ok(strcmp(rin_double_to_hexstring(in[i], buffer, RIN_HEXSTRING_DEFAULT), expected_default[i]), + "%s: expected: %s, got: %s (%1.16e)", + __func__, + expected_default[i], + rin_double_to_hexstring(in[i], buffer, RIN_HEXSTRING_DEFAULT), + in[i]); + + ret = ok(strcmp(rin_double_to_hexstring(in[i], buffer, RIN_HEXSTRING_NOPREFIX), expected_noprefix[i]), + "%s: expected: %s, got: %s (%1.16e)", + __func__, + expected_noprefix[i], + rin_double_to_hexstring(in[i], buffer, RIN_HEXSTRING_NOPREFIX), + in[i]); + } + + return ret; +} + +static struct test_results rin_compare_float_test(void) +{ + struct test_results ret; + size_t i; + static const float a[] = { 0.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 98765.4321f, 98765.4321f, 98765.4321f }; + static const float b[] = { -0.0f, 1.0f, 1.0f, 1.0000001f, -9.8f, 1.000001f, 98765.436f, 98777.7777f, -98765.4321f }; + static const unsigned int expected[] = { 0, 0, 1, 0, 1, 1, 0, 1, 1}; + + for (i = 0; i < 4; ++i) { + ret = ok(rin_compare_float(a[i], b[i], 2) != expected[i], + "%s: expected: %s, got: %s (%1.8e, %1.8e)", + __func__, + expected[i] ? "non-equal" : "equal", + rin_compare_float(a[i], b[i], 2) ? "non-equal" : "equal", + a[i], b[i]); + } + + return ret; +} + + +static struct test_results rin_compare_double_test(void) +{ + struct test_results ret; + size_t i; + static const double a[] = { 0.0, 1.0, -1.0, 1.0, -1.0f, 1.0, 98765.4321, 98765.4321, 98765.4321 }; + static const double b[] = { -0.0, 1.0, 1.0, 1.0000000000000003, -9.8f, 1.000001, 98765.43210000002, 98777.7777, -98765.4321 }; + static const unsigned int expected[] = { 0, 0, 1, 0, 1, 1, 0, 1, 1}; + + for (i = 0; i < 4; ++i) { + ret = ok(rin_compare_double(a[i], b[i], 2) != expected[i], + "%s: expected: %s, got: %s (%1.16e, %1.16e)", + __func__, + expected[i] ? "non-equal" : "equal", + rin_compare_double(a[i], b[i], 2) ? "non-equal" : "equal", + a[i], b[i]); + } + + return ret; +} diff --git a/test/float_test.h b/test/float_test.h new file mode 100644 index 0000000..1787bd7 --- /dev/null +++ b/test/float_test.h @@ -0,0 +1,28 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_FLOAT_TEST_INCLUDED +#define LIBRIN_FLOAT_TEST_INCLUDED + +#include "test.h" + +struct test_results float_test(void); + +#endif /* LIBRIN_FLOAT_TEST_INCLUDED */ diff --git a/test/float_test_private.h b/test/float_test_private.h new file mode 100644 index 0000000..a64aaeb --- /dev/null +++ b/test/float_test_private.h @@ -0,0 +1,37 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_FLOAT_TEST_INCLUDED +#define LIBRIN_FLOAT_TEST_INCLUDED + +#include <stdlib.h> +#include <string.h> +#include <stdint.h> +#include <inttypes.h> +#include "rin/float.h" + +static struct test_results rin_signbitf_test(void); +static struct test_results rin_signbitd_test(void); +static struct test_results rin_float_to_hexstring_test(void); +static struct test_results rin_double_to_hexstring_test(void); +static struct test_results rin_compare_float_test(void); +static struct test_results rin_compare_double_test(void); + +#endif /* LIBRIN_FLOAT_TEST_INCLUDED */ diff --git a/test/main.c b/test/main.c new file mode 100644 index 0000000..c8fae63 --- /dev/null +++ b/test/main.c @@ -0,0 +1,38 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "test.h" +#include "float_test.h" +#include "diagnostic_test.h" + +/* TODO: allow individual tests to be selected */ + + +int main(int argc, char **argv) +{ + struct test_results res; + + res = float_test(); + res = diagnostic_test(); + + printf("%u tests executed, %u test succeeded, %u tests failed.\n", res.executed, res.executed - res.failed, res.failed); + + return EXIT_SUCCESS; +} diff --git a/test/test.c b/test/test.c new file mode 100644 index 0000000..e790538 --- /dev/null +++ b/test/test.c @@ -0,0 +1,38 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "test.h" + +struct test_results ok(const unsigned int test, const char *format, ...) +{ + static struct test_results ret; + va_list args; + + ++ret.executed; + + if (test) { + ++ret.failed; + va_start(args, format); + vprintf(format, args); + putchar('\n'); + } + + return ret; +} diff --git a/test/test.h b/test/test.h new file mode 100644 index 0000000..0597207 --- /dev/null +++ b/test/test.h @@ -0,0 +1,35 @@ +/* + * The Rin Library – library "conformance" tests + * + * Copyright (C) 2015 Gediminas Jakutis + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; version 2.1 + * of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef LIBRIN_TEST_INCLUDED +#define LIBRIN_TEST_INCLUDED + +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> + +struct test_results { + unsigned int executed; + unsigned int failed; +}; + +struct test_results ok(const unsigned int test, const char *format, ...); + +#endif /* LIBRIN_TEST_INCLUDED */ |