Developer Guide and Reference

Contents

_mm_cmp_ss

Compares scalar float32 values. The corresponding Intel® AVX instruction is
VCMPSS
.

Syntax

extern __m128 _mm_cmp_ss(__m128 m1, __m128 m2, const int predicate);
Arguments
m1
float32 vector used for the operation
m2
float32 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 single-precision floating-point values (float32 values) in the first source operand,
m1
, and the second source operand,
m2
, and returns the results.
The comparison predicate parameter (immediate) specifies the type of comparison performed.
Returns
Result of the compare operation.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804