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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/complex/cacosh.c | |
Initial version
Diffstat (limited to 'src/complex/cacosh.c')
| -rw-r--r-- | src/complex/cacosh.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/complex/cacosh.c b/src/complex/cacosh.c new file mode 100644 index 0000000..76127f7 --- /dev/null +++ b/src/complex/cacosh.c @@ -0,0 +1,12 @@ +#include "complex_impl.h" + +/* acosh(z) = i acos(z) */ + +double complex cacosh(double complex z) +{ + int zineg = signbit(cimag(z)); + + z = cacos(z); + if (zineg) return CMPLX(cimag(z), -creal(z)); + else return CMPLX(-cimag(z), creal(z)); +} |