Define isinf macro only if it is not defined as a macro, even if

[pspp-builds.git] / src / libpspp / misc.h

diff --git a/src/libpspp/misc.h b/src/libpspp/misc.h
index 2d30bddcc246c94cc698a7cd4ccb8fcb4a7cb542..39aa535ec360821a28771bd4bf64a3f6c6d36e5a 100644 (file)
--- a/src/libpspp/misc.h
+++ b/src/libpspp/misc.h
@@ -26,17 +26,17 @@
 
 /* HUGE_VAL is traditionally defined as positive infinity, or
    alternatively, DBL_MAX. */
-#if !HAVE_ISINF
+#if !HAVE_ISINF && !defined (isinf)
 #define isinf(X) (fabs (X) == HUGE_VAL)
 #endif
 
 /* A Not a Number is not equal to itself. */
-#if !HAVE_ISNAN
+#if !HAVE_ISNAN && !defined (isnan)
 #define isnan(X) ((X) != (X))
 #endif
 
 /* Finite numbers are not infinities or NaNs. */
-#if !HAVE_FINITE
+#if !HAVE_FINITE && !defined (finite)
 #define finite(X) (!isinf (X) && !isnan (X))
 #elif HAVE_IEEEFP_H
 #include <ieeefp.h>            /* Declares finite() under Solaris. */