| //===-- 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; |
