s_fabs.c (898B)
1/* @(#)s_fabs.c 5.1 93/09/24 */ 2/* 3 * ==================================================== 4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 5 * 6 * Developed at SunPro, a Sun Microsystems, Inc. business. 7 * Permission to use, copy, modify, and distribute this 8 * software is freely granted, provided that this notice 9 * is preserved. 10 * ==================================================== 11 */ 12 13#if defined(LIBM_SCCS) && !defined(lint) 14static const char rcsid[] = 15 "$NetBSD: s_fabs.c,v 1.7 1995/05/10 20:47:13 jtc Exp $"; 16#endif 17 18/* 19 * fabs(x) returns the absolute value of x. 20 */ 21 22#include "math_libm.h" 23#include "math_private.h" 24 25libm_hidden_proto(fabs) 26#ifdef __STDC__ 27 double fabs(double x) 28#else 29 double fabs(x) 30 double x; 31#endif 32{ 33 u_int32_t high; 34 GET_HIGH_WORD(high, x); 35 SET_HIGH_WORD(x, high & 0x7fffffff); 36 return x; 37} 38 39libm_hidden_def(fabs)