source:
EcnlProtoTool/trunk/musl-1.1.18/src/complex/ctan.c@
445
Last change on this file since 445 was 444, checked in by , 4 years ago | |
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File size: 166 bytes |
Rev | Line | |
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[444] | 1 | #include "libm.h" |
2 | ||
3 | /* tan(z) = -i tanh(i z) */ | |
4 | ||
5 | double complex ctan(double complex z) | |
6 | { | |
7 | z = ctanh(CMPLX(-cimag(z), creal(z))); | |
8 | return CMPLX(cimag(z), -creal(z)); | |
9 | } |
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