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/* @(#)z_ceilf.c 1.0 98/08/13 */
/*****************************************************************
 * ceil
 *
 * Input:
 *   x  - floating point value
 *
 * Output:
 *   Smallest integer greater than x.
 *
 * Description:
 *   This routine returns the smallest integer greater than x.
 *
 *****************************************************************/
 
#include "fdlibm.h"
#include "zmath.h"
 
float
_DEFUN (ceilf, (float),
        float x)
{
  float f, y;
 
  y = modff (x, &f);
 
  if (y == 0.0)
    return (x);
  else if (x > -1.0 && x < 1.0)
    return (x > 0 ? 1.0 : 0.0);
  else
    return (x > 0 ? f + 1.0 : f);
}
 
#ifdef _DOUBLE_IS_32BITS
double ceil (double x)
{
  return (double) ceilf ((float) x);
}
 
#endif /* defined(_DOUBLE_IS_32BITS) */

Line No.	Rev	Author	Line
1	56	joel
2			`/* @(#)z_ceilf.c 1.0 98/08/13 */`
3			`/*****************************************************************`
4			`* ceil`
5			`*`
6			`* Input:`
7			`* x - floating point value`
8			`*`
9			`* Output:`
10			`* Smallest integer greater than x.`
11			`*`
12			`* Description:`
13			`* This routine returns the smallest integer greater than x.`
14			`*`
15			`*****************************************************************/`
16
17			`#include "fdlibm.h"`
18			`#include "zmath.h"`
19
20			`float`
21			`_DEFUN (ceilf, (float),`
22			`float x)`
23			`{`
24			`float f, y;`
25
26			`y = modff (x, &f);`
27
28			`if (y == 0.0)`
29			`return (x);`
30			`else if (x > -1.0 && x < 1.0)`
31			`return (x > 0 ? 1.0 : 0.0);`
32			`else`
33			`return (x > 0 ? f + 1.0 : f);`
34			`}`
35
36			`#ifdef _DOUBLE_IS_32BITS`
37			`double ceil (double x)`
38			`{`
39			`return (double) ceilf ((float) x);`
40			`}`
41
42			`#endif /* defined(_DOUBLE_IS_32BITS) */`

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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libm/] [mathfp/] [sf_ceil.c] - Blame information for rev 1774