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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libm/] [math/] [sf_isinf.c] - Blame information for rev 39

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/*
 * isinff(x) returns 1 if x is infinity, else 0;
 * no branching!
 * Added by Cygnus Support.
 */
 
#include "fdlibm.h"
 
#ifdef __STDC__
        int isinff(float x)
#else
        int isinff(x)
        float x;
#endif
{
        __int32_t ix;
        GET_FLOAT_WORD(ix,x);
        ix &= 0x7fffffff;
        ix = 0x7f800000 - ix;
        return 1 - (int)((__uint32_t)(ix|(-ix))>>31);
}
 
#ifdef _DOUBLE_IS_32BITS
 
#ifdef __STDC__
        int isinf(double x)
#else
        int isinf(x)
        double x;
#endif
{
        return isinff((float) x);
}
 
#endif /* defined(_DOUBLE_IS_32BITS) */

Line No.	Rev	Author	Line
1	39	lampret	`/*`
2			`* isinff(x) returns 1 if x is infinity, else 0;`
3			`* no branching!`
4			`* Added by Cygnus Support.`
5			`*/`
6
7			`#include "fdlibm.h"`
8
9			`#ifdef __STDC__`
10			`int isinff(float x)`
11			`#else`
12			`int isinff(x)`
13			`float x;`
14			`#endif`
15			`{`
16			`__int32_t ix;`
17			`GET_FLOAT_WORD(ix,x);`
18			`ix &= 0x7fffffff;`
19			`ix = 0x7f800000 - ix;`
20			`return 1 - (int)((__uint32_t)(ix\|(-ix))>>31);`
21			`}`
22
23			`#ifdef _DOUBLE_IS_32BITS`
24
25			`#ifdef __STDC__`
26			`int isinf(double x)`
27			`#else`
28			`int isinf(x)`
29			`double x;`
30			`#endif`
31			`{`
32			`return isinff((float) x);`
33			`}`
34
35			`#endif /* defined(_DOUBLE_IS_32BITS) */`

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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libm/] [math/] [sf_isinf.c] - Blame information for rev 39