double-double/node/double-double/unary/dd-abs.js

Pure double-double precision functions *with strict error bounds*.

/**
 * Returns the absolute value of the given double-double precision floating
 * point number.
 * @param f a double-double precision floating point number
 */
function ddAbs(f) {
    const Q = f[1];
    return (Q < 0) ? [-f[0], -Q] : f;
}
export { ddAbs };
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