| //===-- IsInf.cpp - Platform-independent wrapper around C99 isinf() -------===// |
| // |
| // 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 isinf() |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Config/config.h" |
| |
| #if HAVE_ISINF_IN_MATH_H |
| # include <math.h> |
| #elif HAVE_ISINF_IN_CMATH |
| # include <cmath> |
| #elif HAVE_STD_ISINF_IN_CMATH |
| # include <cmath> |
| using std::isinf; |
| #elif HAVE_FINITE_IN_IEEEFP_H |
| // A handy workaround I found at http://www.unixguide.net/sun/faq ... |
| // apparently this has been a problem with Solaris for years. |
| # include <ieeefp.h> |
| static int isinf(double x) { return !finite(x) && x==x; } |
| #elif defined(_MSC_VER) |
| #include <float.h> |
| #define isinf(X) (!_finite(X)) |
| #elif defined(_AIX) && defined(__GNUC__) |
| // GCC's fixincludes seems to be removing the isinf() declaration from the |
| // system header /usr/include/math.h |
| # include <math.h> |
| static int isinf(double x) { return !finite(x) && x==x; } |
| #elif defined(__hpux) |
| // HP-UX is "special" |
| #include <math.h> |
| static int isinf(double x) { return ((x) == INFINITY) || ((x) == -INFINITY); } |
| #else |
| # error "Don't know how to get isinf()" |
| #endif |
| |
| namespace llvm { |
| |
| int IsInf(float f) { return isinf(f); } |
| int IsInf(double d) { return isinf(d); } |
| |
| } // end namespace llvm; |
