exponent.rs.html -- source

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matrixmultiply

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nalgebra

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rand

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rand_distr

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ryu

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unicode_xid

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url

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void

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client.rs error.rs lib.rs server.rs

yaml_rust

emitter.rs lib.rs parser.rs scanner.rs yaml.rs

use core::ptr;

use digit_table::*;

#[cfg_attr(feature = "no-panic", inline)]
pub unsafe fn write_exponent3(mut k: isize, mut result: *mut u8) -> usize {
    let sign = k < 0;
    if sign {
        *result = b'-';
        result = result.offset(1);
        k = -k;
    }

    debug_assert!(k < 1000);
    if k >= 100 {
        *result = b'0' + (k / 100) as u8;
        k %= 100;
        let d = DIGIT_TABLE.get_unchecked(k as usize * 2);
        ptr::copy_nonoverlapping(d, result.offset(1), 2);
        sign as usize + 3
    } else if k >= 10 {
        let d = DIGIT_TABLE.get_unchecked(k as usize * 2);
        ptr::copy_nonoverlapping(d, result, 2);
        sign as usize + 2
    } else {
        *result = b'0' + k as u8;
        sign as usize + 1
    }
}

#[cfg_attr(feature = "no-panic", inline)]
pub unsafe fn write_exponent2(mut k: isize, mut result: *mut u8) -> usize {
    let sign = k < 0;
    if sign {
        *result = b'-';
        result = result.offset(1);
        k = -k;
    }

    debug_assert!(k < 100);
    if k >= 10 {
        let d = DIGIT_TABLE.get_unchecked(k as usize * 2);
        ptr::copy_nonoverlapping(d, result, 2);
        sign as usize + 2
    } else {
        *result = b'0' + k as u8;
        sign as usize + 1
    }
}

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