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-rw-r--r--include/complex.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/complex.h b/include/complex.h
index e173f1f6a3..082e71fb10 100644
--- a/include/complex.h
+++ b/include/complex.h
@@ -1,11 +1,13 @@
 #ifndef _COMPLEX_H
 # include <math/complex.h>
 
+# ifndef _ISOMAC
 /* Return the complex inverse hyperbolic sine of finite nonzero Z,
    with the imaginary part of the result subtracted from pi/2 if ADJ
    is nonzero.  */
 extern complex float __kernel_casinhf (complex float z, int adj);
 extern complex double __kernel_casinh (complex double z, int adj);
 extern complex long double __kernel_casinhl (complex long double z, int adj);
+# endif
 
 #endif