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Last change
on this file since 471 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
749 bytes
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| 1 | |
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| 2 | /* @(#)s_finite.c 5.1 93/09/24 */ |
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| 3 | /* |
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| 4 | * ==================================================== |
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| 5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 6 | * |
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| 7 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 8 | * Permission to use, copy, modify, and distribute this |
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| 9 | * software is freely granted, provided that this notice |
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| 10 | * is preserved. |
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| 11 | * ==================================================== |
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| 12 | */ |
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| 13 | |
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| 14 | /* |
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| 15 | * finite(x) returns 1 is x is finite, else 0; |
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| 16 | * no branching! |
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| 17 | */ |
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| 18 | |
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| 19 | #include "fdlibm.h" |
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| 20 | |
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| 21 | #ifndef _DOUBLE_IS_32BITS |
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| 22 | |
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| 23 | #ifdef __STDC__ |
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| 24 | int finite(double x) |
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| 25 | #else |
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| 26 | int finite(x) |
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| 27 | double x; |
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| 28 | #endif |
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| 29 | { |
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| 30 | __int32_t hx; |
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| 31 | GET_HIGH_WORD(hx,x); |
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| 32 | return (int)((__uint32_t)((hx&0x7fffffff)-0x7ff00000)>>31); |
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| 33 | } |
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| 34 | |
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| 35 | #endif /* _DOUBLE_IS_32BITS */ |
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