Function boolean_enums::lstd::arch::x86::_mm_testz_ps

pub unsafe fn _mm_testz_ps(a: __m128, b: __m128) -> i32

This is supported on x86 and target feature avx only.

Compute the bitwise AND of 128 bits (representing single-precision (32-bit) floating-point elements) in a and b, producing an intermediate 128-bit value, and set ZF to 1 if the sign bit of each 32-bit element in the intermediate value is zero, otherwise set ZF to 0. Compute the bitwise NOT of a and then AND with b, producing an intermediate value, and set CF to 1 if the sign bit of each 32-bit element in the intermediate value is zero, otherwise set CF to 0. Return the ZF value.

Intel's documentation