| 1 | /* winFuncs.h |
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| 2 | Definitions for missing math lib functions |
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| 3 | Andrew Jackson, October 2007 |
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| 4 | */ |
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| 5 | |
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| 6 | double fmax(double x, double y); |
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| 7 | //long double fmaxl (long double x, long double y); |
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| 8 | //float fmaxf (float x, float y); |
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| 9 | |
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| 10 | double fmin(double x, double y); |
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| 11 | |
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| 12 | double trunc(double x); |
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| 13 | //long double truncl(long double x); |
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| 14 | //float truncf(float x); |
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| 15 | |
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| 16 | double erf(double x); |
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| 17 | //long double erfl(long double x); |
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| 18 | //float erff (float x); |
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| 19 | //double erfc(double x); |
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| 20 | //long double erfcl(long double x); |
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| 21 | //float erfcf(float x; |
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| 22 | |
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| 23 | |
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| 24 | // Define INFINITY and NAN |
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| 25 | typedef union { unsigned char __c[4]; float __f; } __huge_valf_t; |
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| 26 | |
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| 27 | # if __BYTE_ORDER == __BIG_ENDIAN |
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| 28 | # define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 } |
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| 29 | # endif |
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| 30 | # if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 31 | # define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f } |
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| 32 | # endif |
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| 33 | |
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| 34 | static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; |
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| 35 | # define INFINITY (__huge_valf.__f) |
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| 36 | |
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| 37 | |
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| 38 | # if __BYTE_ORDER == __BIG_ENDIAN |
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| 39 | # define __nan_bytes { 0x7f, 0xc0, 0, 0 } |
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| 40 | # endif |
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| 41 | # if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 42 | # define __nan_bytes { 0, 0, 0xc0, 0x7f } |
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| 43 | # endif |
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| 44 | |
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| 45 | static union { unsigned char __c[4]; float __d; } __nan_union; |
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| 46 | # define NAN (__nan_union.__d) |
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| 47 | |
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