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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* sf_finite.c -- float version of s_finite.c. |
| 2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
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| 3 | */ |
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| 4 | |||
| 5 | /* |
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| 6 | * ==================================================== |
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| 7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 8 | * |
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| 9 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 10 | * Permission to use, copy, modify, and distribute this |
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| 11 | * software is freely granted, provided that this notice |
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| 12 | * is preserved. |
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| 13 | * ==================================================== |
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| 14 | */ |
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| 15 | |||
| 16 | /* |
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| 17 | * finitef(x) returns 1 is x is finite, else 0; |
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| 18 | * no branching! |
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| 19 | */ |
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| 20 | |||
| 21 | #include "fdlibm.h" |
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| 22 | |||
| 23 | #ifdef __STDC__ |
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| 24 | int finitef(float x) |
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| 25 | #else |
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| 26 | int finitef(x) |
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| 27 | float x; |
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| 28 | #endif |
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| 29 | { |
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| 30 | __int32_t ix; |
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| 31 | GET_FLOAT_WORD(ix,x); |
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| 32 | ix &= 0x7fffffff; |
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| 33 | return (FLT_UWORD_IS_FINITE(ix)); |
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| 34 | } |
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| 35 | |||
| 36 | #ifdef _DOUBLE_IS_32BITS |
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| 37 | |||
| 38 | #ifdef __STDC__ |
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| 39 | int finite(double x) |
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| 40 | #else |
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| 41 | int finite(x) |
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| 42 | double x; |
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| 43 | #endif |
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| 44 | { |
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| 45 | return finitef((float) x); |
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| 46 | } |
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| 47 | |||
| 48 | #endif /* defined(_DOUBLE_IS_32BITS) */ |