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bytecount 0.5.1

count occurrences of a given byte, or the number of UTF-8 code points, in a byte slice, fast
Documentation 
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#[cfg(feature = "generic-simd")]
pub mod generic;

// This is like generic, but written explicitly
// because generic SIMD requires nightly.
#[cfg(all(
    feature = "runtime-dispatch-simd",
    any(target_arch = "x86", target_arch = "x86_64"),
    not(feature = "generic-simd")
))]
pub mod x86_sse2;

// Modern x86 machines can do lots of fun stuff;
// this is where the *real* optimizations go.
// Runtime feature detection is not available with no_std.
#[cfg(all(feature = "runtime-dispatch-simd", target_arch = "x86_64"))]
pub mod x86_avx2;