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| 1 | /*
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| 2 | * (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
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| 3 | * See the copyright notice in the ACK home directory, in the file "Copyright".
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| 4 | *
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| 5 | * Author: Ceriel J.H. Jacobs
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| 6 | */
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| 7 | /* $Header: /cvsup/minix/src/lib/math/ceil.c,v 1.1.1.1 2005/04/21 14:56:26 beng Exp $ */
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| 8 |
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| 9 | #include <math.h>
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| 10 |
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| 11 | double
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| 12 | ceil(double x)
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| 13 | {
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| 14 | double val;
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| 15 |
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| 16 | return modf(x, &val) > 0 ? val + 1.0 : val ;
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| 17 | /* this also works if modf always returns a positive
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| 18 | fractional part
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| 19 | */
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| 20 | }
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