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Math.hxx: move cmath include out of define

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The _GLIBCXX_USE_C99_MATH macro is defined in glibcxx by c++config.h, which
gets included by every header. Which means a header needs to be present.

(cherry picked from commit 79e9aff338)
This commit is contained in:
Rosen Penev 2020-04-07 20:14:00 -07:00
parent 5ccfcffcc1
commit 6080c3b4ba
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GPG Key ID: 36D31CFA845F0E3B
1 changed files with 6 additions and 1 deletions
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7
src/util/Math.hxx
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@ -30,11 +30,16 @@
#ifndef MATH_HXX #ifndef MATH_HXX
#define MATH_HXX #define MATH_HXX
#include <cmath>
/*
* C99 math can be optionally omitted with gcc's libstdc++.
* Use boost if unavailable.
*/
#if (defined(__GLIBCPP__) || defined(__GLIBCXX__)) && !defined(_GLIBCXX_USE_C99_MATH) #if (defined(__GLIBCPP__) || defined(__GLIBCXX__)) && !defined(_GLIBCXX_USE_C99_MATH)
#include <boost/math/special_functions/round.hpp> #include <boost/math/special_functions/round.hpp>
using boost::math::lround; using boost::math::lround;
#else #else
#include <cmath>
using std::lround; using std::lround;
#endif #endif