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* math/Makefile (calls): Add s_frexp, s_ldexp.

Browse Source 
(routines): Remove them and &f from here.

	* sys/socket.h: New file, wrapper for socket/sys/socket.h.

Thu Jul 11 00:22:40 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/s_frexpl.c: New file.  `long double'
	implementation of frexp() function.
	* sysdeps/libm-ieee754/s_ldexpl.c: New file.  `long double'
	implementation of ldexp() function.

	* sysdeps/libm-i387/s_isnanl.c (isnanl): Mask explicit one
	out before or'ing.
This commit is contained in:
Roland McGrath
1996-07-12 00:43:28 +00:00
parent adc6ff7f81
commit e6c9a67a0b
6 changed files with 172 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
sysdeps/libm-i387/s_isnanl.c
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@@ -36,10 +36,11 @@ static char rcsid[] = "$NetBSD: $";
int32_t se,hx,lx;
GET_LDOUBLE_WORDS(se,hx,lx,x);
se = (se & 0x7fff) << 1;
lx |= hx;
/* The additional &hx is required because Intel's extended format
has the normally implicit 1 explicit present. Sigh! */
se |= (u_int32_t)((lx|(-lx))&hx)>>31;
/* The additional & 0x7fffffff is required because Intel's
extended format has the normally implicit 1 explicit
present. Sigh! */
lx |= hx & 0x7fffffff;
se |= (u_int32_t)(lx|(-lx))>>31;
se = 0xfffe - se;
return (int)((u_int32_t)(se))>>16;
}

69
sysdeps/libm-ieee754/s_frexpl.c Normal file
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@@ -0,0 +1,69 @@
/* s_frexpl.c -- long double version of s_frexp.c.
* Conversion to long double by Ulrich Drepper,
* Cygnus Support, drepper@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: $";
#endif
/*
* for non-zero x
* x = frexpl(arg,&exp);
* return a long double fp quantity x such that 0.5 <= |x| <1.0
* and the corresponding binary exponent "exp". That is
* arg = x*2^exp.
* If arg is inf, 0.0, or NaN, then frexpl(arg,&exp) returns arg
* with *exp=0.
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
static const long double
#else
static long double
#endif
#if LDBL_MANT_DIG == 64
two65 = 3.68934881474191032320e+19L; /* 0x4040, 0x80000000, 0x00000000 */
#else
# error "Cannot handle this MANT_DIG"
#endif
#ifdef __STDC__
long double __frexpl(long double x, int *eptr)
#else
long double __frexpl(x, eptr)
long double x; int *eptr;
#endif
{
u_int32_t se, hx, ix, lx;
GET_LDOUBLE_WORDS(se,hx,lx,x);
ix = 0x7fff&se;
*eptr = 0;
if(ix==0x7fff||((ix|hx|lx)==0)) return x; /* 0,inf,nan */
if (ix==0x0000) { /* subnormal */
x *= two65;
GET_LDOUBLE_EXP(se,x);
ix = se&0x7fff;
*eptr = -65;
}
*eptr += ix-16382;
se = (se & 0x8000) | 0x3ffe;
SET_LDOUBLE_EXP(x,se);
return x;
}
weak_alias (__frexpl, frexpl)

37
sysdeps/libm-ieee754/s_ldexpl.c Normal file
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@@ -0,0 +1,37 @@
/* s_ldexpl.c -- long double version of s_ldexp.c.
* Conversion to long double by Ulrich Drepper,
* Cygnus Support, drepper@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: $";
#endif
#include "math.h"
#include "math_private.h"
#include <errno.h>
#ifdef __STDC__
long double __ldexpl(long double value, int exp)
#else
long double __ldexpl(value, exp)
long double value; int exp;
#endif
{
if(!__finitel(value)||value==0.0) return value;
value = __scalbnl(value,exp);
if(!__finitel(value)||value==0.0) errno = ERANGE;
return value;
}
weak_alias (__ldexpl, ldexpl)