From 8b26e3ef33e3871762ebd62acbff85b2c3abd9fc Mon Sep 17 00:00:00 2001 From: Gediminas Jakutis Date: Sat, 31 Jan 2015 20:35:30 +0200 Subject: Initial commit - Release 0.0.1 --- include/rin/float.h | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 include/rin/float.h (limited to 'include/rin/float.h') 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 +#include + +/* + * 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 */ -- cgit v1.2.3