projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| ee188d55 RM |
1 | /* w_scalbl.c -- long double version of w_scalb.c. |
| 2 | * Conversion to long double by Ulrich Drepper, | |
| 3 | * Cygnus Support, drepper@cygnus.com. | |
| 4 | */ | |
| 5 | ||
| 6 | /* | |
| 7 | * ==================================================== | |
| 8 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| 9 | * | |
| 10 | * Developed at SunPro, a Sun Microsystems, Inc. business. | |
| 11 | * Permission to use, copy, modify, and distribute this | |
| 12 | * software is freely granted, provided that this notice | |
| 13 | * is preserved. | |
| 14 | * ==================================================== | |
| 15 | */ | |
| 16 | ||
| 17 | #if defined(LIBM_SCCS) && !defined(lint) | |
| 18 | static char rcsid[] = "$NetBSD: $"; | |
| 19 | #endif | |
| 20 | ||
| 21 | /* | |
| 22 | * wrapper scalbl(long double x, long double fn) is provide for | |
| 23 | * passing various standard test suite. One | |
| 24 | * should use scalbnl() instead. | |
| 25 | */ | |
| 26 | ||
| 27 | #include "math.h" | |
| 28 | #include "math_private.h" | |
| 29 | ||
| 30 | #include <errno.h> | |
| 31 | ||
| 32 | #ifdef __STDC__ | |
| 33 | #ifdef _SCALB_INT | |
| 34 | long double __scalbl(long double x, int fn) /* wrapper scalbl */ | |
| 35 | #else | |
| 36 | long double __scalbl(long double x, long double fn)/* wrapper scalbl */ | |
| 37 | #endif | |
| 38 | #else | |
| 39 | long double __scalbl(x,fn) /* wrapper scalbl */ | |
| 40 | #ifdef _SCALB_INT | |
| 41 | long double x; int fn; | |
| 42 | #else | |
| 43 | long double x,fn; | |
| 44 | #endif | |
| 45 | #endif | |
| 46 | { | |
| 47 | #ifdef _IEEE_LIBM | |
| 48 | return __ieee754_scalbl(x,fn); | |
| 49 | #else | |
| 50 | long double z; | |
| 51 | z = __ieee754_scalbl(x,fn); | |
| 6d0c4914 | 52 | if(_LIB_VERSION != _SVID_) return z; |
| ee188d55 RM |
53 | if(!(__finitel(z)||__isnanl(z))&&__finitel(x)) { |
| 54 | return __kernel_standard(x,(double)fn,232); /* scalb overflow */ | |
| 55 | } | |
| 56 | if(z==0.0&&z!=x) { | |
| 57 | return __kernel_standard(x,(double)fn,233); /* scalb underflow */ | |
| 58 | } | |
| 59 | #ifndef _SCALB_INT | |
| c4029823 | 60 | if(!__finitel(fn)) __set_errno (ERANGE); |
| ee188d55 RM |
61 | #endif |
| 62 | return z; | |
| 63 | #endif | |
| 64 | } | |
| 65 | weak_alias (__scalbl, scalbl) |