mirror of https://github.com/python/cpython
20 lines
478 B
C
20 lines
478 B
C
#include "Python.h"
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#ifdef HAVE_GCC_ASM_FOR_X87
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// Inline assembly for getting and setting the 387 FPU control word on
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// GCC/x86.
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#ifdef _Py_MEMORY_SANITIZER
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__attribute__((no_sanitize_memory))
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#endif
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unsigned short _Py_get_387controlword(void) {
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unsigned short cw;
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__asm__ __volatile__ ("fnstcw %0" : "=m" (cw));
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return cw;
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}
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void _Py_set_387controlword(unsigned short cw) {
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__asm__ __volatile__ ("fldcw %0" : : "m" (cw));
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}
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#endif // HAVE_GCC_ASM_FOR_X87
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