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21 lines
392 B
C
21 lines
392 B
C
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/*
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ccosl.c
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Contributed by Danny Smith
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2005-01-04
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*/
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#include <math.h>
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#include <complex.h>
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/* ccos (x + I * y) = cos (x) * cosh (y)
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+ I * (sin (x) * sinh (y)) */
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long double complex ccosl (long double complex Z)
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{
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long double complex Res;
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__real__ Res = cosl (__real__ Z) * coshl ( __imag__ Z);
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__imag__ Res = -sinl (__real__ Z) * sinhl ( __imag__ Z);
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return Res;
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}
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