Intel® C++ Compiler Classic Developer Guide and Reference
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Visible to Intel only — GUID: GUID-23F7BAA1-C89F-4652-B83D-7955A3E7FA61
_mm256_movemask_pd
Extracts float64 sign mask. The corresponding Intel® AVX instruction is VMOVMSKPD.
Syntax
extern int _mm256_movemask_pd(__m256d a); |
Arguments
a |
float64 source vector |
Description
Performs an extract operation of sign bits from four double-precision floating point elements (float64 elements) of the source vector a, and composes them into bitmasks.
Returns
An integer bitmask of four meaningful bits.