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| 1 | /*
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| 2 | * cos.h
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| 3 | * The basic idea is to exploit Pade polynomials.
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| 4 | * A lot of ideas were inspired by the cephes math library (by Stephen L. Moshier
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| 5 | * moshier@na-net.ornl.gov) as well as actual code.
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| 6 | * The Cephes library can be found here: http://www.netlib.org/cephes/
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| 7 | *
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| 8 | * Created on: Jun 23, 2012
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| 9 | * Author: Danilo Piparo, Thomas Hauth, Vincenzo Innocente
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| 10 | */
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| 11 |
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| 12 | #ifndef COS_H_
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| 13 | #define COS_H_
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| 14 |
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| 15 | #include "sincos.h"
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| 16 |
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| 17 | namespace vdt{
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| 18 |
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| 19 | // Cos double precision --------------------------------------------------------
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| 20 |
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| 21 | /// Double precision cosine: just call sincos.
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| 22 | inline double fast_cos(double x){double s,c;fast_sincos(x,s,c);return c;}
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| 23 |
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| 24 | //------------------------------------------------------------------------------
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| 25 |
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| 26 | inline float fast_cosf(float x){float s,c;fast_sincosf(x,s,c);return c;}
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| 27 |
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| 28 | //------------------------------------------------------------------------------
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| 29 |
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| 30 | } //vdt namespace
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| 31 |
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| 32 | #endif /* COS_H_ */
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