fp16/lib/utils.js

Half-precision 16-bit floating point numbers

const float32Buffer = new ArrayBuffer(4);
export const float32View = new DataView(float32Buffer);
export const float16Precision = 10;
export const float16Emax = 15;
export const float16Emin = -14;
export const float32Precision = 23;
export const float32Emax = 127;
export const float32Emin = -126;
/**
 *
 * @param value an int32 representing the bits of a float32
 * @returns a pretty string showing the sign, exponent, and mantissa bits
 */
export function format32(value) {
    const a = value >>> 16;
    const b = value & 0x0000ffff;
    const b16 = a.toString(16).padStart(4, "0") + b.toString(16).padStart(4, "0");
    const b02 = a.toString(2).padStart(16, "0") + b.toString(2).padStart(16, "0");
    return `0x${b16} | ${b02[0]} ${b02.slice(1, 9)} ${b02.slice(9)}`;
}
/**
 *
 * @param value a uint16 representing the bits of a float16
 * @returns a pretty string showing the sign, exponent, and mantissa bits
 */
export function format16(value) {
    const b16 = value.toString(16).padStart(4, "0");
    const b02 = value.toString(2).padStart(16, "0");
    return `0x${b16} | ${b02[0]} ${b02.slice(1, 6)} ${b02.slice(6)}`;
}