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High word mask for the significand of a double-precision floating-point number.
import FLOAT64_HIGH_WORD_SIGNIFICAND_MASK from 'https://cdn.jsdelivr.net/gh/stdlib-js/constants-float64-high-word-significand-mask@deno/mod.js';High word mask for the significand of a double-precision floating-point number.
// 0x000fffff = 1048575 => 0 00000000000 11111111111111111111
var bool = ( FLOAT64_HIGH_WORD_SIGNIFICAND_MASK === 0x000fffff );
// returns true- The higher order word of a double-precision floating-point number is a 32-bit integer containing the more significant bits which include the exponent and sign.
import getHighWord from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-float64-base-get-high-word@deno/mod.js';
import FLOAT64_HIGH_WORD_SIGNIFICAND_MASK from 'https://cdn.jsdelivr.net/gh/stdlib-js/constants-float64-high-word-significand-mask@deno/mod.js';
var x = 11.5;
var hi = getHighWord( x ); // 0 10000000010 01110000000000000000
// returns 1076297728
// Mask off all bits except for the significand bits:
var out = hi & FLOAT64_HIGH_WORD_SIGNIFICAND_MASK; // 0 00000000000 01110000000000000000
// returns 458752
// Mask on the significand bits and leave other bits unchanged:
out = hi | FLOAT64_HIGH_WORD_SIGNIFICAND_MASK; // 0 10000000010 11111111111111111111
// returns 1076887551@stdlib/constants-float64/high-word-exponent-mask: high word mask for the exponent of a double-precision floating-point number.@stdlib/constants-float64/high-word-sign-mask: high word mask for the sign bit of a double-precision floating-point number.@stdlib/constants-float64/high-word-abs-mask: high word mask for excluding the sign bit of a double-precision floating-point number.
This package is part of stdlib, a standard library with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
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