_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.

Para obtener información más completa sobre las optimizaciones del compilador, consulte nuestro Aviso de optimización.