Function core::arch::x86_64::_mm_test_all_ones

1.27.0 · source ·
pub unsafe fn _mm_test_all_ones(a: __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 ones.


  • a - A 128-bit integer vector containing the bits to be tested.


  • 1 - if the bits specified in the operand are all set to 1,
  • 0 - otherwise.

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