Function core::arch::x86::_mm_cmpngt_ss

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

This is supported on x86 and target feature sse only.

Compare the lowest f32 of both inputs for not-greater-than. The lowest 32 bits of the result will be 0xffffffff if a.extract(0) is not greater than b.extract(0), or 0 otherwise. The upper 96 bits of the result are the upper 96 bits of a.

Intel's documentation