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Diffstat (limited to 'src/complex/cacosh.c')
| -rw-r--r-- | src/complex/cacosh.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/complex/cacosh.c b/src/complex/cacosh.c index 8e42f1ae..76127f75 100644 --- a/src/complex/cacosh.c +++ b/src/complex/cacosh.c @@ -4,6 +4,9 @@ double complex cacosh(double complex z) { + int zineg = signbit(cimag(z)); + z = cacos(z); - return CMPLX(-cimag(z), creal(z)); + if (zineg) return CMPLX(cimag(z), -creal(z)); + else return CMPLX(-cimag(z), creal(z)); } |