# _mm_cmp_sd

Compares scalar float64 vectors. The corresponding Intel® AVX instruction is VCMPSD.

## Syntax

extern __m128d _mm_cmp_sd(__m128d m1, __m128d m2, const int predicate);

## Arguments

m1 | float64 vector used for the operation
m2 | float64 vector also used for the operation
predicate | an immediate operand that specifies the type of comparison to be performed of the packed values; see immintrin.h file for the values to specify the type of comparison

## Description

Performs a compare operation of the low double-precision floating-point values (float64 values) in the first source operand, m1, and the second source operand, m2, and returns the result.

The comparison predicate parameter (immediate operand) specifies the type of comparison performed on each of the pairs of values.

## Returns

Result of the compare operation.

Parent topic: Intrinsics for Compare Operations