HP-UX system headers make a mess of isinf(), so much so that gcc fixincludes

can't patch it up for c++ (works in C though)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22079 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/IsInf.cpp b/lib/Support/IsInf.cpp
index 070ed4fcc1c790afdfb765080bf65fd747372d66..5160110bc2e2828bdece7fdbc5779222b35693f1 100644 (file)
--- a/lib/Support/IsInf.cpp
+++ b/lib/Support/IsInf.cpp
@@ -29,6 +29,10 @@ static int isinf(double x) { return !finite(x) && x==x; }
 // system header /usr/include/math.h
 # include <math.h>
 static int isinf(double x) { return !finite(x) && x==x; }
+#elif defined(__hpux)
+// HP-UX is "special"
+#include <math.h>
+static int isinf(double x) { return ((x)==INFINITY)||((x)==-INFINITY); }
 #else
 # error "Don't know how to get isinf()"
 #endif