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author | koba <koba@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 07 Jan 2011 23:19:05 +0900 |
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#include <math.h> #define SANKAKU (100000.0) static const double pi2 = M_PI * 2.0; static inline float Mycos(float c) { return cosf( c / 360.0 * pi2 ) * SANKAKU; } static inline float Mysin(float c) { return sinf( c / 360.0 * pi2 ) * SANKAKU; }