49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
|
/* s_fabsl.c -- long double version of s_fabs.c.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ====================================================
|
||
|
|
* 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
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* fabsl(x) returns the absolute value of x.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <math.h>
|
||
|
|
#include <math_private.h>
|
||
|
|
#include <math_ldbl_opt.h>
|
||
|
|
#include <math-use-builtins.h>
|
||
|
|
|
||
|
|
long double __fabsl(long double x)
|
||
|
|
{
|
||
|
|
#if USE_FABSL_BUILTIN
|
||
|
|
return __builtin_fabsl (x);
|
||
|
|
#else
|
||
|
|
uint64_t hx, lx;
|
||
|
|
double xhi, xlo;
|
||
|
|
|
||
|
|
ldbl_unpack (x, &xhi, &xlo);
|
||
|
|
EXTRACT_WORDS64 (hx, xhi);
|
||
|
|
EXTRACT_WORDS64 (lx, xlo);
|
||
|
|
lx = lx ^ ( hx & 0x8000000000000000LL );
|
||
|
|
hx = hx & 0x7fffffffffffffffLL;
|
||
|
|
INSERT_WORDS64 (xhi, hx);
|
||
|
|
INSERT_WORDS64 (xlo, lx);
|
||
|
|
x = ldbl_pack (xhi, xlo);
|
||
|
|
return x;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
long_double_symbol (libm, __fabsl, fabsl);
|