Base 2 exponential function.
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> Base 2 [exponential function][exponential-function].
``bash`
npm install @stdlib/math-base-special-exp2
`javascript`
var exp2 = require( '@stdlib/math-base-special-exp2' );
#### exp2( x )
Evaluates the base 2 [exponential function][exponential-function].
`javascript
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
`
`javascript
var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var exp2 = require( '@stdlib/math-base-special-exp2' );
var opts = {
'dtype': 'float64'
};
var x = uniform( 100, -50.0, 50.0, opts );
logEachMap( '2^%0.4f = %0.4f', x, exp2 );
`
*
`c`
#include "stdlib/math/base/special/exp2.h"
#### stdlib_base_exp2( x )
Evaluates the base 2 [exponential function][exponential-function].
`c
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.
`c`
double stdlib_base_exp2( const double x );
`c
#include "stdlib/math/base/special/exp2.h"
#include
#include
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][@stdlib/math/base/special/exp]: natural exponential function.
- [@stdlib/math-base/special/exp10][@stdlib/math/base/special/exp10]: base 10 exponential function.
- [@stdlib/math-base/special/log2][@stdlib/math/base/special/log2]: binary logarithm (base 2).
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
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[exponential-function]: https://en.wikipedia.org/wiki/Exponential_function
[@stdlib/math/base/special/exp]: https://www.npmjs.com/package/@stdlib/math-base-special-exp
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[@stdlib/math/base/special/log2]: https://www.npmjs.com/package/@stdlib/math-base-special-log2