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tinyexpr: use std:: namespace for older libstdc++

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Fixes the build on Ubuntu Xenial 16.04 and CentOS 7.
This commit is contained in:
David Adam 2021-03-31 11:21:42 +08:00
parent 85ffa77b4e
commit f46444f106
1 changed files with 6 additions and 0 deletions
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6
src/tinyexpr.cpp
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@ -38,6 +38,12 @@
#include <iterator>
#include <utility>
// Older version of libstdc++ (GCC 5 and before) need this as wutil.h includes common.h, which
// includes <algorithm>, which includes <cmath> - meaning the functions get included into the std::
// namespace, and including math.h later does not reimport them.
using std::isnan;
using std::signbit;
// TODO: It would be nice not to rely on a typedef for this, especially one that can only do
// functions with two args.
using te_fun2 = double (*)(double, double);