1//===-- IsNAN.cpp ---------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Platform-independent wrapper around C99 isnan().
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Config/config.h"
15
16#if HAVE_ISNAN_IN_MATH_H
17# include <math.h>
18#elif HAVE_ISNAN_IN_CMATH
19# include <cmath>
20#elif HAVE_STD_ISNAN_IN_CMATH
21# include <cmath>
22using std::isnan;
23#elif defined(_MSC_VER)
24#include <float.h>
25#define isnan _isnan
26#else
27# error "Don't know how to get isnan()"
28#endif
29
30namespace llvm {
31  int IsNAN(float f)  { return isnan(f); }
32  int IsNAN(double d) { return isnan(d); }
33} // end namespace llvm;
34