Zig 0.17.0-dev (Split by item)

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isEightDigits

Determine if 8 bytes are all decimal digits. This does not care about the order in which the bytes were loaded.

common.isEightDigits

pub fn isEightDigits(v: u64) bool

File

lib/std/fmt/parse_float/common.zig:73

Code

pub fn isEightDigits(v: u64) bool {
    const a = v +% 0x4646_4646_4646_4646;
    const b = v -% 0x3030_3030_3030_3030;
    return ((a | b) & 0x8080_8080_8080_8080) == 0;
}