Initial commit - Release 0.0.1librin-0.0.1

1 files changed, 66 insertions, 0 deletions

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 */