| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | //===-- IsNAN.cpp ---------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| Chris Lattner | 081ce94 | 2007-12-29 20:36:04 +0000 | [diff] [blame^] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 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> |
| 22 | using 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 | |
| 30 | namespace llvm { |
| 31 | int IsNAN(float f) { return isnan(f); } |
| 32 | int IsNAN(double d) { return isnan(d); } |
| 33 | } // end namespace llvm; |