1/* s_ceilf.c -- float version of s_ceil.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5/*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
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
12 * is preserved.
13 * ====================================================
14 */
15
16#include <math.h>
17#include <math_private.h>
18#include <libm-alias-float.h>
19
20
21float
22__ceilf(float x)
23{
24 int32_t i0,j0;
25 uint32_t i;
26
27 GET_FLOAT_WORD(i0,x);
28 j0 = ((i0>>23)&0xff)-0x7f;
29 if(j0<23) {
30 if(j0<0) {
31 /* return 0*sign(x) if |x|<1 */
32 if(i0<0) {i0=0x80000000;}
33 else if(i0!=0) { i0=0x3f800000;}
34 } else {
35 i = (0x007fffff)>>j0;
36 if((i0&i)==0) return x; /* x is integral */
37 if(i0>0) i0 += (0x00800000)>>j0;
38 i0 &= (~i);
39 }
40 } else {
41 if(__builtin_expect(j0==0x80, 0)) return x+x; /* inf or NaN */
42 else return x; /* x is integral */
43 }
44 SET_FLOAT_WORD(x,i0);
45 return x;
46}
47#ifndef __ceilf
48libm_alias_float (__ceil, ceil)
49#endif
50