freebsd-skq/contrib/llvm/lib/Support/IsNAN.cpp
rdivacky 92026fed21 Import LLVM/clang from vendor stripped of docs/ test/ website/ www/ examples/
in llvm/ and/or llvm/contrib/clang/ respectively.

Approved by:	ed (mentor)
Approved by:	core
2010-06-09 17:59:52 +00:00

34 lines
914 B
C++

//===-- IsNAN.cpp ---------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file 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;