Function core::arch::x86::_mm_test_all_zeros

1.27.0 · source · [−]
pub unsafe fn _mm_test_all_zeros(a: __m128i, mask: __m128i) -> i32
This is supported on x86 and target feature sse4.1 only.
Expand description

Tests whether the specified bits in a 128-bit integer vector are all zeros.

Arguments:

  • a - A 128-bit integer vector containing the bits to be tested.
  • mask - A 128-bit integer vector selecting which bits to test in operand a.

Returns:

  • 1 - if the specified bits are all zeros,
  • 0 - otherwise.

Intel’s documentation