Chromium Code Reviews| Index: fusl/src/complex/catanh.c |
| diff --git a/fusl/src/complex/catanh.c b/fusl/src/complex/catanh.c |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..e248d9b934135c5b474d16223c520109f0ed3d71 |
| --- /dev/null |
| +++ b/fusl/src/complex/catanh.c |
| @@ -0,0 +1,9 @@ |
| +#include "libm.h" |
| + |
| +/* atanh = -i atan(i z) */ |
| + |
| +double complex catanh(double complex z) |
| +{ |
| + z = catan(CMPLX(-cimag(z), creal(z))); |
| + return CMPLX(cimag(z), -creal(z)); |
| +} |