I am using SIMD with SSE2 instruction set, I want to convert values from double to float using _mm_cvtpd_ps. But I need control over the rounding mode which is used. We are also using multithreading.
So I want to know is it thread safe to use _MM_SET_ROUNDING_MODE(STMXCSR) which changes the value in the MXCSR register to change the rounding mode.
If NO is there some other way to change the rounding mode of _mm_cvtpd_ps which is threadsafe.
