Function core::arch::x86_64::_mm_testz_si128

1.27.0 · source ·
pub unsafe fn _mm_testz_si128(a: __m128i, mask: __m128i) -> i32
Available on (x86 or x86-64) and target feature sse4.1 and x86-64 only.
Expand description

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


  • 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.


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

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