X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FSupport%2FIsInf.cpp;h=d6da0c99e8d8d64e65fbaa80f1c68e8c82d6201f;hb=9c23685dd25370a9a255052e44fa609b8ce455c0;hp=4142b911e2cbc04bb85ccdc68cb6951cd274e3f7;hpb=418f73cbaa77470f3546c0acc64cefccedfba991;p=oota-llvm.git

diff --git a/lib/Support/IsInf.cpp b/lib/Support/IsInf.cpp
index 4142b911e2c..d6da0c99e8d 100644
--- a/lib/Support/IsInf.cpp
+++ b/lib/Support/IsInf.cpp
@@ -1,17 +1,18 @@
-//===-- IsInf.cpp ---------------------------------------------------------===//
-// 
+//===-- IsInf.cpp - Platform-independent wrapper around C99 isinf() -------===//
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
 //===----------------------------------------------------------------------===//
 //
-// Platform-independent wrapper around C99 isinf(). 
+// Platform-independent wrapper around C99 isinf()
 //
 //===----------------------------------------------------------------------===//
 
-#include "Config/config.h"
+#include "llvm/Config/config.h"
+
 #if HAVE_ISINF_IN_MATH_H
 # include <math.h>
 #elif HAVE_ISINF_IN_CMATH
@@ -19,13 +20,30 @@
 #elif HAVE_STD_ISINF_IN_CMATH
 # include <cmath>
 using std::isinf;
+#elif HAVE_FINITE_IN_IEEEFP_H
+// A handy workaround I found at http://www.unixguide.net/sun/faq ...
+// apparently this has been a problem with Solaris for years.
+# include <ieeefp.h>
+static int isinf(double x) { return !finite(x) && x==x; }
+#elif defined(_MSC_VER)
+#include <float.h>
+#define isinf(X) (!_finite(X))
+#elif defined(_AIX) && defined(__GNUC__)
+// GCC's fixincludes seems to be removing the isinf() declaration from the
+// 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
 
 namespace llvm {
 
-int IsInf (float f)  { return isinf (f); }
-int IsInf (double d) { return isinf (d); }
+int IsInf(float f)  { return isinf(f); }
+int IsInf(double d) { return isinf(d); }
 
-}; // end namespace llvm;
+} // end namespace llvm;