Function core::arch::x86_64::_mm_test_all_ones

1.27.0 · source · [−]
pub unsafe fn _mm_test_all_ones(a: __m128i) -> i32
This is supported on x86-64 and target feature sse4.1 only.
Expand description

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

Argument:

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

Returns:

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

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