mirror of https://github.com/ArduPilot/ardupilot
28 lines
661 B
C
28 lines
661 B
C
#pragma once
|
|
|
|
#if (defined __APPLE__) && (defined(__i386__) || defined(__x86_64__))
|
|
|
|
#include <fenv.h>
|
|
|
|
// Public domain polyfill for feenableexcept on OS X
|
|
// http://www-personal.umich.edu/~williams/archive/computation/fe-handling-example.c
|
|
|
|
inline int
|
|
feenableexcept (unsigned int excepts)
|
|
{
|
|
static fenv_t fenv;
|
|
unsigned int new_excepts = excepts & FE_ALL_EXCEPT,
|
|
old_excepts; // previous masks
|
|
|
|
if ( fegetenv (&fenv) ) return -1;
|
|
old_excepts = fenv.__control & FE_ALL_EXCEPT;
|
|
|
|
// unmask
|
|
fenv.__control &= ~new_excepts;
|
|
fenv.__mxcsr &= ~(new_excepts << 7);
|
|
|
|
return ( fesetenv (&fenv) ? -1 : old_excepts );
|
|
}
|
|
|
|
#endif // APPLE
|