mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 15:00:06 +00:00
f7eac6eb50
* Makeconfig ($(common-objpfx)config.make): Depend on config.h.in. Mon Mar 4 17:35:09 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * hurd/catch-signal.c (hurd_safe_memmove): New function. (hurd_safe_copyin, hurd_safe_copyout): New functions. * hurd/hurd/sigpreempt.h: Declare them. Sun Mar 3 08:43:44 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> Replace math code with fdlibm from Sun as modified for netbsd by JT Conklin and Ian Taylor, including x86 FPU support. * sysdeps/libm-ieee754, sysdeps/libm-i387: New directories. * math/math_private.h: New file. * sysdeps/i386/fpu/Implies: New file. * sysdeps/ieee754/Implies: New file. * math/machine/asm.h, math/machine/endian.h: New files. * math/Makefile, math/math.h: Rewritten. * mathcalls.h, math/mathcalls.h: New file, broken out of math.h. * math/finite.c: File removed. * sysdeps/generic/Makefile [$(subdir)=math]: Frobnication removed. * math/test-math.c: Include errno.h and string.h. * sysdeps/unix/bsd/dirstream.h: File removed. * sysdeps/unix/bsd/readdir.c: File removed.
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/* w_scalbf.c -- float version of w_scalb.c.
|
|
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
|
|
*/
|
|
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
#if defined(LIBM_SCCS) && !defined(lint)
|
|
static char rcsid[] = "$NetBSD: w_scalbf.c,v 1.3 1995/05/10 20:49:50 jtc Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* wrapper scalbf(float x, float fn) is provide for
|
|
* passing various standard test suite. One
|
|
* should use scalbn() instead.
|
|
*/
|
|
|
|
#include "math.h"
|
|
#include "math_private.h"
|
|
|
|
#include <errno.h>
|
|
|
|
#ifdef __STDC__
|
|
#ifdef _SCALB_INT
|
|
float __scalbf(float x, int fn) /* wrapper scalbf */
|
|
#else
|
|
float __scalbf(float x, float fn) /* wrapper scalbf */
|
|
#endif
|
|
#else
|
|
float __scalbf(x,fn) /* wrapper scalbf */
|
|
#ifdef _SCALB_INT
|
|
float x; int fn;
|
|
#else
|
|
float x,fn;
|
|
#endif
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_scalbf(x,fn);
|
|
#else
|
|
float z;
|
|
z = __ieee754_scalbf(x,fn);
|
|
if(_LIB_VERSION == _IEEE_) return z;
|
|
if(!(__finitef(z)||__isnanf(z))&&__finitef(x)) {
|
|
/* scalbf overflow */
|
|
return (float)__kernel_standard((double)x,(double)fn,132);
|
|
}
|
|
if(z==(float)0.0&&z!=x) {
|
|
/* scalbf underflow */
|
|
return (float)__kernel_standard((double)x,(double)fn,133);
|
|
}
|
|
#ifndef _SCALB_INT
|
|
if(!__finitef(fn)) errno = ERANGE;
|
|
#endif
|
|
return z;
|
|
#endif
|
|
}
|
|
weak_alias (__scalbf, scalbf)
|