FLOAT64_HIGH_WORD_EXPONENT_MASK

High word mask for the exponent of a double-precision floating-point number.

Usage

var FLOAT64_HIGH_WORD_EXPONENT_MASK = require( '@stdlib/constants/float64/high-word-exponent-mask' );

FLOAT64_HIGH_WORD_EXPONENT_MASK

High word mask for the exponent of a double-precision floating-point number.

// 0x7ff00000 = 2146435072 => 0 11111111111 00000000000000000000
var bool = ( FLOAT64_HIGH_WORD_EXPONENT_MASK === 0x7ff00000 );
// returns true

Notes

Examples

var getHighWord = require( '@stdlib/number/float64/base/get-high-word' );
var FLOAT64_HIGH_WORD_EXPONENT_MASK = require( '@stdlib/constants/float64/high-word-exponent-mask' );

var x = 11.5;
var hi = getHighWord( x ); // 0 10000000010 01110000000000000000
// returns 1076297728

// Mask off all bits except for the exponent bits:
var out = hi & FLOAT64_HIGH_WORD_EXPONENT_MASK; // 0 10000000010 00000000000000000000
// returns 1075838976

// Mask on the exponent bits and leave other bits unchanged:
out = hi | FLOAT64_HIGH_WORD_EXPONENT_MASK; // 0 11111111111 01110000000000000000
// returns 2146893824

C APIs

Usage

#include "stdlib/constants/float64/high_word_exponent_mask.h"

STDLIB_CONSTANT_FLOAT64_HIGH_WORD_EXPONENT_MASK

Macro for the high word mask for the exponent of a double-precision floating-point number.

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