diff options
| author | Stanislaw Halik <sthalik@misaki.pl> | 2016-06-14 11:43:06 +0200 |
|---|---|---|
| committer | Stanislaw Halik <sthalik@misaki.pl> | 2016-06-14 18:14:46 +0200 |
| commit | dcef445e694c6e2b65d7f1fd0462f4ceacdaff3c (patch) | |
| tree | c5dfd614298c66718c8f54fc47c315025b8e1cb8 /opentrack | |
| parent | f9e4a82ac414bf60e817b48ac8443a00c83b2f1e (diff) | |
api: add nan checking function
Diffstat (limited to 'opentrack')
| -rw-r--r-- | opentrack/CMakeLists.txt | 3 | ||||
| -rw-r--r-- | opentrack/nan.cpp | 16 |
2 files changed, 19 insertions, 0 deletions
diff --git a/opentrack/CMakeLists.txt b/opentrack/CMakeLists.txt index 7763178d..dd90bda6 100644 --- a/opentrack/CMakeLists.txt +++ b/opentrack/CMakeLists.txt @@ -5,3 +5,6 @@ if(NOT WIN32) else() target_link_libraries(opentrack-api winmm) endif() +if(CMAKE_COMPILER_IS_GNUCXX) + set_source_files_properties(nan.cpp PROPERTIES COMPILE_FLAGS "-fno-fast-math -fno-finite-math-only -fno-fast-math -O2") +endif() diff --git a/opentrack/nan.cpp b/opentrack/nan.cpp new file mode 100644 index 00000000..2522ba38 --- /dev/null +++ b/opentrack/nan.cpp @@ -0,0 +1,16 @@ +#include <cmath> + +#if defined(__GNUC__) +bool __attribute__ ((noinline)) nanp(double value) +#elif defined(_WIN32) +__declspec(noinline) bool nanp(double value) +#else +bool nanp(double value) +#endif +{ + using std::isnan; + using std::isinf; + + const volatile double x = value; + return isnan(x) || isinf(x); +}
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