1 /* s_modff.c -- float version of s_modf.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
4 * $FreeBSD: src/lib/msun/src/s_modff.c,v 1.5 1999/08/28 00:06:53 peter Exp $
5 * $DragonFly: src/lib/msun/src/Attic/s_modff.c,v 1.2 2003/06/17 04:26:53 dillon Exp $
9 * ====================================================
10 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
12 * Developed at SunPro, a Sun Microsystems, Inc. business.
13 * Permission to use, copy, modify, and distribute this
14 * software is freely granted, provided that this notice
16 * ====================================================
20 #include "math_private.h"
23 static const float one = 1.0;
25 static float one = 1.0;
29 float modff(float x, float *iptr)
38 j0 = ((i0>>23)&0xff)-0x7f; /* exponent of x */
39 if(j0<23) { /* integer part in x */
40 if(j0<0) { /* |x|<1 */
41 SET_FLOAT_WORD(*iptr,i0&0x80000000); /* *iptr = +-0 */
45 if((i0&i)==0) { /* x is integral */
49 SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */
52 SET_FLOAT_WORD(*iptr,i0&(~i));
56 } else { /* no fraction part */
60 SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */