Initial commit - Release 0.0.1librin-0.0.1

30 files changed, 1804 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
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--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,3 @@
+The Rin Library was brought to you thanks to the work of:
+
+Gediminas Jakutis
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..8add30a
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,504 @@
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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
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..a9003fd
--- /dev/null
+++ b/INSTALL
@@ -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
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/NEWS
diff --git a/README b/README
new file mode 100644
index 0000000..6838520
--- /dev/null
+++ b/README
@@ -0,0 +1 @@
+Note: the API is _very_ unstable, for now
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..8acdd82
--- /dev/null
+++ b/VERSION
@@ -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 */