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30 lines
493 B
C
30 lines
493 B
C
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/* @(#)z_cos.c 1.0 98/08/13 */
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/******************************************************************
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* Cosine
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*
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* Input:
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* x - floating point value
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*
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* Output:
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* cosine of x
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*
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* Description:
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* This routine returns the cosine of x.
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*
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*****************************************************************/
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#include "fdlibm.h"
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#include "zmath.h"
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#ifndef _DOUBLE_IS_32BITS
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double
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_DEFUN (cos, (double),
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double x)
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{
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return (sine (x, 1));
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}
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#endif /* _DOUBLE_IS_32BITS */
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