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authorThomas Martitz <kugel@rockbox.org>2010-05-14 12:43:45 +0000
committerThomas Martitz <kugel@rockbox.org>2010-05-14 12:43:45 +0000
commit68947473e11ec9ac97f00fa5c70cee820753be90 (patch)
treeefe51f0174cc2f9b2e7aa8d309ae3ad0f076877c /firmware/libc
parent3cca7e865082c8144a47687e3a2455fba5a927d5 (diff)
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Move math.h to firmware/libc/include/ and fix slight incompatibilities between our and the host's math.h
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26020 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/libc')
-rw-r--r--firmware/libc/include/math.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/firmware/libc/include/math.h b/firmware/libc/include/math.h
new file mode 100644
index 0000000000..07f1f2d686
--- /dev/null
+++ b/firmware/libc/include/math.h
@@ -0,0 +1,53 @@
+/* math.h -- Definitions for the math floating point package. */
+
+#ifndef _MATH_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+#define _MATH_H_
+
+#include "_ansi.h"
+
+#ifndef __STRICT_ANSI__
+
+#define __signgam_r(ptr) ((ptr)->_new._reent._gamma_signgam)
+
+/* Values for the type field of struct exception. */
+
+#define DOMAIN 1
+#define SING 2
+#define OVERFLOW 3
+#define UNDERFLOW 4
+#define TLOSS 5
+#define PLOSS 6
+
+/* Useful constants. */
+
+#define M_E 2.7182818284590452354
+#define M_LOG2E 1.4426950408889634074
+#define M_LOG10E 0.43429448190325182765
+#define M_LN2 0.69314718055994530942
+#define M_LN10 2.30258509299404568402
+#define M_PI 3.14159265358979323846
+#define M_PI_2 1.57079632679489661923
+#define M_PI_4 0.78539816339744830962
+#define M_3PI_4 2.3561944901923448370E0
+#define M_SQRTPI 1.77245385090551602792981
+#define M_1_PI 0.31830988618379067154
+#define M_2_PI 0.63661977236758134308
+#define M_2_SQRTPI 1.12837916709551257390
+#define M_SQRT2 1.41421356237309504880
+#define M_SQRT1_2 0.70710678118654752440
+#define M_LN2LO 1.9082149292705877000E-10
+#define M_LN2HI 6.9314718036912381649E-1
+#define M_SQRT3 1.73205080756887719000
+#define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */
+#define M_LOG2_E 0.693147180559945309417
+#define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */
+
+#endif /* ! defined (__STRICT_ANSI__) */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _MATH_H_ */