Last change
on this file since 535 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
975 bytes
|
Rev | Line | |
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[444] | 1 | /* wf_exp2.c -- float version of w_exp2.c. |
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| 2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
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| 3 | */ |
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| 4 | |
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| 5 | /* |
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| 6 | * ==================================================== |
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| 7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 8 | * |
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| 9 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 10 | * Permission to use, copy, modify, and distribute this |
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| 11 | * software is freely granted, provided that this notice |
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| 12 | * is preserved. |
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| 13 | * ==================================================== |
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| 14 | */ |
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| 15 | |
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| 16 | /* |
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| 17 | * wrapper exp2f(x) |
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| 18 | */ |
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| 19 | |
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| 20 | #include "fdlibm.h" |
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| 21 | #if __OBSOLETE_MATH |
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| 22 | #include <errno.h> |
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| 23 | #include <math.h> |
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| 24 | |
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| 25 | #ifdef __STDC__ |
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| 26 | float exp2f(float x) /* wrapper exp2f */ |
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| 27 | #else |
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| 28 | float exp2f(x) /* wrapper exp2f */ |
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| 29 | float x; |
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| 30 | #endif |
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| 31 | { |
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| 32 | return powf(2.0, x); |
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| 33 | } |
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| 34 | |
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| 35 | #ifdef _DOUBLE_IS_32BITS |
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| 36 | |
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| 37 | #ifdef __STDC__ |
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| 38 | double exp2(double x) |
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| 39 | #else |
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| 40 | double exp2(x) |
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| 41 | double x; |
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| 42 | #endif |
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| 43 | { |
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| 44 | return (double) exp2f((float) x); |
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| 45 | } |
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| 46 | |
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| 47 | #endif /* defined(_DOUBLE_IS_32BITS) */ |
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| 48 | #endif /* __OBSOLETE_MATH */ |
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