The prototypes for Intel® Streaming SIMD Extensions (Intel® SSE) intrinsics to read from and write to registers are in the xmmintrin.h header file.
To use these intrinsics, include the immintrin.h file as follows:
#include <immintrin.h>
Intrinsic Name |
Operation |
Corresponding |
---|---|---|
_mm_getcsr |
Return control register |
STMXCSR |
_mm_setcsr |
Set control register |
LDMXCSR |
unsigned int _mm_getcsr(void);
Returns the contents of the control register.
void _mm_setcsr(unsigned int i);
Sets the control register to the value specified by i.