Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
730 bytes
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Rev | Line | |
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[444] | 1 | |
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| 2 | /* @(#)z_ceilf.c 1.0 98/08/13 */ |
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| 3 | /***************************************************************** |
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| 4 | * ceil |
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| 5 | * |
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| 6 | * Input: |
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| 7 | * x - floating point value |
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| 8 | * |
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| 9 | * Output: |
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| 10 | * Smallest integer greater than x. |
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| 11 | * |
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| 12 | * Description: |
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| 13 | * This routine returns the smallest integer greater than x. |
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| 14 | * |
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| 15 | *****************************************************************/ |
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| 16 | |
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| 17 | #include "fdlibm.h" |
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| 18 | #include "zmath.h" |
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| 19 | |
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| 20 | float |
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| 21 | ceilf (float x) |
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| 22 | { |
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| 23 | float f, y; |
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| 24 | |
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| 25 | y = modff (x, &f); |
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| 26 | |
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| 27 | if (y == 0.0) |
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| 28 | return (x); |
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| 29 | else if (x > -1.0 && x < 1.0) |
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| 30 | return (x > 0 ? 1.0 : 0.0); |
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| 31 | else |
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| 32 | return (x > 0 ? f + 1.0 : f); |
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| 33 | } |
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| 34 | |
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| 35 | #ifdef _DOUBLE_IS_32BITS |
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| 36 | double ceil (double x) |
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| 37 | { |
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| 38 | return (double) ceilf ((float) x); |
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| 39 | } |
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| 40 | |
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| 41 | #endif /* defined(_DOUBLE_IS_32BITS) */ |
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