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4ee451de36
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
914 B
C++
34 lines
914 B
C++
//===-- IsNAN.cpp ---------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Platform-independent wrapper around C99 isnan().
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Config/config.h"
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#if HAVE_ISNAN_IN_MATH_H
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# include <math.h>
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#elif HAVE_ISNAN_IN_CMATH
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# include <cmath>
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#elif HAVE_STD_ISNAN_IN_CMATH
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# include <cmath>
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using std::isnan;
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#elif defined(_MSC_VER)
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#include <float.h>
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#define isnan _isnan
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#else
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# error "Don't know how to get isnan()"
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#endif
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namespace llvm {
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int IsNAN(float f) { return isnan(f); }
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int IsNAN(double d) { return isnan(d); }
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} // end namespace llvm;
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