| #include <fenv.h> | |
| /* 7.6.2.5 | |
| The fetestexcept function determines which of a specified subset of | |
| the exception flags are currently set. The excepts argument | |
| specifies the exception flags to be queried. | |
| The fetestexcept function returns the value of the bitwise OR of the | |
| exception macros corresponding to the currently set exceptions | |
| included in excepts. */ | |
| int fetestexcept (int excepts) | |
| { | |
| unsigned short _sw; | |
| __asm__ ("fnstsw %%ax" : "=a" (_sw)); | |
| return _sw & excepts & FE_ALL_EXCEPT; | |
| } |