lib/Support/MathExtras.cpp

   1 //===-- MathExtras.cpp - Implement the MathExtras header --------------===//
   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 // This file implements the MathExtras.h header
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Support/MathExtras.h"
  15
  16 #ifdef _MSC_VER
  17 #include <limits>
  18 #else
  19 #include <math.h>
  20 #endif
  21
  22 namespace llvm {
  23
  24 #if defined(_MSC_VER)
  25   // Visual Studio defines the HUGE_VAL class of macros using purposeful
  26   // constant arithmetic overflow, which it then warns on when encountered.
  27   const float huge_valf = std::numeric_limits<float>::infinity();
  28 #else
  29   const float huge_valf = HUGE_VALF;
  30 #endif
  31
  32 }