1 /* s_ceilf.c -- float version of s_ceil.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 huge = 1.0e30;
28 j0 = ((i0>>23)&0xff)-0x7f;
30 if(j0<0) { /* raise inexact if x != 0 */
31 if(huge+x>(float)0.0) {/* return 0*sign(x) if |x|<1 */
32 if(i0<0) {i0=0x80000000;}
33 else if(i0!=0) { i0=0x3f800000;}
37 if((i0&i)==0) return x; /* x is integral */
38 if(huge+x>(float)0.0) { /* raise inexact flag */
39 if(i0>0) i0 += (0x00800000)>>j0;
44 if(j0==0x80) return x+x; /* inf or NaN */
45 else return x; /* x is integral */