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llvm-mirror/lib/Support/IsNAN.cpp
Chris Lattner f604017e47 Patches to make the LLVM sources more -pedantic clean. Patch provided
by Anton Korobeynikov!  This is a step towards closing PR786.

llvm-svn: 28447
2006-05-24 17:04:05 +00:00

35 lines
960 B
C++

//===-- IsNAN.cpp ---------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
//
// Platform-independent wrapper around C99 isnan().
//
//===----------------------------------------------------------------------===//
#include "llvm/Config/config.h"
#if HAVE_ISNAN_IN_MATH_H
# include <math.h>
#elif HAVE_ISNAN_IN_CMATH
# include <cmath>
#elif HAVE_STD_ISNAN_IN_CMATH
# include <cmath>
using std::isnan;
#elif defined(_MSC_VER)
#include <float.h>
#define isnan _isnan
#else
# error "Don't know how to get isnan()"
#endif
namespace llvm {
int IsNAN (float f) { return isnan (f); }
int IsNAN (double d) { return isnan (d); }
} // end namespace llvm;