_xtest
Classification
Other, General Support, CPUID Test: RTM
Header File
immintrin.h
Instruction
XTEST
Synopsis
 _xtest(void);
Description
Query the transactional execution status, return 1 if inside a transactionally executing RTM or HLE region, and return 0 otherwise.
Operation
IF (RTM_ACTIVE == 1 OR HLE_ACTIVE == 1)
	dst := 1
ELSE
	dst := 0
FI