sub

Subtract two double-precision floating-point numbers.

Installation

npm install @stdlib/math-base-ops-sub

Usage

var sub = require( '@stdlib/math-base-ops-sub' );

sub( x, y )

Subtracts two double-precision floating-point numbers.

var v = sub( -1.0, 5.0 );
// returns -6.0

v = sub( 2.0, 5.0 );
// returns -3.0

v = sub( 0.0, 5.0 );
// returns -5.0

v = sub( -0.0, 0.0 );
// returns -0.0

v = sub( NaN, NaN );
// returns NaN

Examples

var rand = require( '@stdlib/random-base-discrete-uniform' );
var sub = require( '@stdlib/math-base-ops-sub' );

var x;
var y;
var i;

for ( i = 0; i < 100; i++ ) {
    x = rand( -50, 50 );
    y = rand( -50, 50 );
    console.log( '%d - %d = %d', x, y, sub( x, y ) );
}

C APIs

Usage

#include "stdlib/math/base/ops/sub.h"

stdlib_base_sub( x, y )

Subtracts two double-precision floating-point numbers.

double v = stdlib_base_sub( -5.0, 2.0 );
// returns -7.0

The function accepts the following arguments:

• x: [in] double first input value.
• y: [in] double second input value.

double stdlib_base_sub( const double x, const double y );

Examples

#include "stdlib/math/base/ops/sub.h"
#include <stdio.h>

int main( void ) {
    const double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };
    const double y[] = { 3.14, -3.14, -0.0, 0.0/0.0 };

    double z;
    int i;
    for ( i = 0; i < 4; i++ ) {
        z = stdlib_base_sub( x[ i ], y[ i ] );
        printf( "%lf - %lf = %lf\n", x[ i ], y[ i ], z );
    }
}

See Also

• @stdlib/math-base/ops/add: compute the sum of two double-precision floating-point numbers.
• @stdlib/math-base/ops/div: divide two double-precision floating-point numbers.
• @stdlib/math-base/ops/mul: multiply two double-precision floating-point numbers.

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, 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.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.