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/*
 * isinf(x) returns 1 if x is infinity, else 0;
 * no branching!
 * Added by Cygnus Support.
 */
 
#include "fdlibm.h"
 
#ifndef _DOUBLE_IS_32BITS
 
#ifdef __STDC__
        int isinf(double x)
#else
        int isinf(x)
        double x;
#endif
{
        __int32_t hx,lx;
        EXTRACT_WORDS(hx,lx,x);
        hx &= 0x7fffffff;
        hx |= (__uint32_t)(lx|(-lx))>>31;
        hx = 0x7ff00000 - hx;
        return 1 - (int)((__uint32_t)(hx|(-hx))>>31);
}
 
#endif /* _DOUBLE_IS_32BITS */

Line No.	Rev	Author	Line
1	39	lampret	`/*`
2			`* isinf(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			`#ifndef _DOUBLE_IS_32BITS`
10
11			`#ifdef __STDC__`
12			`int isinf(double x)`
13			`#else`
14			`int isinf(x)`
15			`double x;`
16			`#endif`
17			`{`
18			`__int32_t hx,lx;`
19			`EXTRACT_WORDS(hx,lx,x);`
20			`hx &= 0x7fffffff;`
21			`hx \|= (__uint32_t)(lx\|(-lx))>>31;`
22			`hx = 0x7ff00000 - hx;`
23			`return 1 - (int)((__uint32_t)(hx\|(-hx))>>31);`
24			`}`
25
26			`#endif /* _DOUBLE_IS_32BITS */`

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