mirror of
https://github.com/eledio-devices/thirdparty-ArduinoJson.git
synced 2025-10-31 08:42:39 +01:00
133 lines
2.4 KiB
C++
133 lines
2.4 KiB
C++
// Copyright Benoit Blanchon 2014-2017
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// MIT License
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//
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// Arduino JSON library
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// https://bblanchon.github.io/ArduinoJson/
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// If you like this project, please add a star!
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#pragma once
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// If Visual Studo
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#if defined(_MSC_VER)
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#include <float.h>
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#include <limits>
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namespace ArduinoJson {
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namespace Polyfills {
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template <typename T>
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bool isNaN(T x) {
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return _isnan(x) != 0;
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}
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template <typename T>
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bool isInfinity(T x) {
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return !_finite(x);
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}
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template <typename T>
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T nan() {
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return std::numeric_limits<T>::quiet_NaN();
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}
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template <typename T>
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T inf() {
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return std::numeric_limits<T>::infinity();
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}
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}
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}
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#else
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#include <math.h>
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// GCC warning: "conversion to 'float' from 'double' may alter its value"
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#ifdef __GNUC__
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
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#pragma GCC diagnostic push
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#endif
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
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#pragma GCC diagnostic ignored "-Wfloat-conversion"
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#else
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#pragma GCC diagnostic ignored "-Wconversion"
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#endif
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#endif
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// Workaround for libs that #undef isnan or isinf
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// https://bblanchon.github.io/ArduinoJson//issues/284
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#if !defined(isnan) || !defined(isinf)
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namespace std {}
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#endif
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namespace ArduinoJson {
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namespace Polyfills {
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template <typename T>
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bool isNaN(T x) {
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// Workaround for libs that #undef isnan
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// https://bblanchon.github.io/ArduinoJson//issues/284
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#ifndef isnan
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using namespace std;
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#endif
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return isnan(x);
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}
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#if defined(_GLIBCXX_HAVE_ISNANL) && _GLIBCXX_HAVE_ISNANL
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template <>
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inline bool isNaN<double>(double x) {
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return isnanl(x);
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}
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#endif
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#if defined(_GLIBCXX_HAVE_ISNANF) && _GLIBCXX_HAVE_ISNANF
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template <>
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inline bool isNaN<float>(float x) {
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return isnanf(x);
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}
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#endif
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template <typename T>
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bool isInfinity(T x) {
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// Workaround for libs that #undef isinf
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// https://bblanchon.github.io/ArduinoJson//issues/284
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#ifndef isinf
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using namespace std;
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#endif
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return isinf(x);
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}
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#if defined(_GLIBCXX_HAVE_ISINFL) && _GLIBCXX_HAVE_ISINFL
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template <>
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inline bool isInfinity<double>(double x) {
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return isinfl(x);
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}
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#endif
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#if defined(_GLIBCXX_HAVE_ISINFF) && _GLIBCXX_HAVE_ISINFF
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template <>
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inline bool isInfinity<float>(float x) {
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return isinff(x);
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}
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#endif
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template <typename T>
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T nan() {
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return static_cast<T>(NAN);
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}
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template <typename T>
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T inf() {
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return static_cast<T>(INFINITY);
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}
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#if defined(__GNUC__)
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
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#pragma GCC diagnostic pop
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#endif
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#endif
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}
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}
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#endif
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