X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fcomplex%2Fcacosh.c;h=76127f75f4bb1b4369bf98d209c0089e2ff86bca;hb=3f701faace7addc75d16dea8a6cd769fa5b3f260;hp=8e42f1ae86ed5556933a3f0dca8b7a6b9130ffcc;hpb=2d72b58070bc43a727b580a46746e87215a60a33;p=musl

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));
 }