1 /* s_frexpf.c -- float version of s_frexp.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 * ====================================================
15 * $NetBSD: s_frexpf.c,v 1.9 2002/12/05 16:03:42 scw Exp $
16 * $DragonFly: src/lib/libm/src/s_frexpf.c,v 1.1 2005/07/26 21:15:20 joerg Exp $
20 #include "math_private.h"
23 two25 = 3.3554432000e+07; /* 0x4c000000 */
26 frexpf(float x, int *eptr)
32 if(ix>=0x7f800000||(ix==0)) return x; /* 0,inf,nan */
33 if (ix<0x00800000) { /* subnormal */
39 *eptr += (ix>>23)-126;
40 hx = (hx&0x807fffff)|0x3f000000;
41 *(int*)(void*)&x = hx;