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Last change
on this file since 450 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.0 KB
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| 1 | /* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved. |
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| 2 | * |
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| 3 | * Permission to use, copy, modify, and distribute this software |
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| 4 | * is freely granted, provided that this notice is preserved. |
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| 5 | */ |
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| 6 | /* |
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| 7 | FUNCTION |
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| 8 | <<fmax>>, <<fmaxf>>---maximum |
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| 9 | INDEX |
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| 10 | fmax |
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| 11 | INDEX |
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| 12 | fmaxf |
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| 13 | |
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| 14 | SYNOPSIS |
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| 15 | #include <math.h> |
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| 16 | double fmax(double <[x]>, double <[y]>); |
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| 17 | float fmaxf(float <[x]>, float <[y]>); |
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| 18 | |
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| 19 | DESCRIPTION |
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| 20 | The <<fmax>> functions determine the maximum numeric value of their arguments. |
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| 21 | NaN arguments are treated as missing data: if one argument is a NaN and the |
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| 22 | other numeric, then the <<fmax>> functions choose the numeric value. |
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| 23 | |
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| 24 | RETURNS |
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| 25 | The <<fmax>> functions return the maximum numeric value of their arguments. |
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| 26 | |
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| 27 | PORTABILITY |
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| 28 | ANSI C, POSIX. |
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| 29 | |
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| 30 | */ |
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| 31 | |
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| 32 | #include "fdlibm.h" |
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| 33 | |
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| 34 | #ifndef _DOUBLE_IS_32BITS |
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| 35 | |
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| 36 | #ifdef __STDC__ |
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| 37 | double fmax(double x, double y) |
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| 38 | #else |
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| 39 | double fmax(x,y) |
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| 40 | double x; |
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| 41 | double y; |
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| 42 | #endif |
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| 43 | { |
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| 44 | if (__fpclassifyd(x) == FP_NAN) |
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| 45 | return y; |
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| 46 | if (__fpclassifyd(y) == FP_NAN) |
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| 47 | return x; |
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| 48 | |
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| 49 | return x > y ? x : y; |
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| 50 | } |
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| 51 | |
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| 52 | #endif /* _DOUBLE_IS_32BITS */ |
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