1 /* s_modff.c -- float version of s_modf.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
13 * ====================================================
17 #include "math_private.h"
19 static const float one = 1.0;
22 modff(float x, float *iptr)
27 j0 = ((i0>>23)&0xff)-0x7f; /* exponent of x */
28 if(j0<23) { /* integer part in x */
29 if(j0<0) { /* |x|<1 */
30 SET_FLOAT_WORD(*iptr,i0&0x80000000); /* *iptr = +-0 */
34 if((i0&i)==0) { /* x is integral */
38 SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */
41 SET_FLOAT_WORD(*iptr,i0&(~i));
45 } else { /* no fraction part */
49 SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */