24 lines
400 B
C
24 lines
400 B
C
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/* catanh.c */
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/*
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Contributed by Danny Smith
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2003-10-20
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*/
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#include <math.h>
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#include <complex.h>
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/* catanh (z) = -I * catan (I * z) */
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double complex catanh (double complex Z)
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{
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double complex Tmp;
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double complex Res;
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__real__ Tmp = - __imag__ Z;
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__imag__ Tmp = __real__ Z;
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Tmp = catan (Tmp);
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__real__ Res = __imag__ Tmp;
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__imag__ Res = - __real__ Tmp;
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return Res;
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}
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