About stdlib...
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
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Base
2
exponential function.
npm install @stdlib/math-base-special-exp2
var exp2 = require( '@stdlib/math-base-special-exp2' );
Evaluates the base 2
exponential function.
var v = exp2( 3.0 );
// returns 8.0
v = exp2( -9.0 );
// returns ~0.002
v = exp2( 0.0 );
// returns 1.0
v = exp2( NaN );
// returns NaN
var randu = require( '@stdlib/random-base-randu' );
var exp2 = require( '@stdlib/math-base-special-exp2' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = (randu()*100.0) - 50.0;
console.log( '2^%d = %d', x, exp2( x ) );
}
#include "stdlib/math/base/special/exp2.h"
Evaluates the base 2
exponential function.
double out = stdlib_base_exp2( 3.0 );
// returns 8.0
out = stdlib_base_exp2( -9.0 );
// returns ~0.002
The function accepts the following arguments:
-
x:
[in] double
input value.
double stdlib_base_exp2( const double x );
#include "stdlib/math/base/special/exp2.h"
#include <stdlib.h>
#include <stdio.h>
int main( void ) {
double x;
double v;
int i;
for ( i = 0; i < 100; i++ ) {
x = ( ( (double)rand() / (double)RAND_MAX ) * 100.0 ) - 50.0;
v = stdlib_base_exp2( x );
printf( "2^%lf = %lf\n", x, v );
}
}
-
@stdlib/math-base/special/exp
: natural exponential function. -
@stdlib/math-base/special/exp10
: base 10 exponential function. -
@stdlib/math-base/special/log2
: binary logarithm (base 2).
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.
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