sincosf

Simultaneously compute the sine and cosine of a single-precision floating-point number (in radians).

Installation

npm install @stdlib/math-base-special-sincosf

Usage

var sincosf = require( '@stdlib/math-base-special-sincosf' );

sincosf( x )

Simultaneously computes the sine and cosine of a single-precision floating-point number (in radians).

var v = sincosf( 0.0 );
// returns [ ~0.0, ~1.0 ]

v = sincosf( 3.141592653589793/2.0 );
// returns [ ~1.0, ~0.0 ]

v = sincosf( -3.141592653589793/6.0 );
// returns [ ~-0.5, ~0.866 ]

sincosf.assign( x, out, stride, offset )

Simultaneously computes the sine and cosine of a single-precision floating-point number (in radians) and assigns the results to a provided output array.

var Float32Array = require( '@stdlib/array-float32' );

var out = new Float32Array( 2 );

var v = sincosf.assign( 0.0, out, 1, 0 );
// returns <Float32Array>[ ~0.0, ~1.0 ]

var bool = ( v === out );
// returns true

Examples

var uniform = require( '@stdlib/random-array-uniform' );
var TWO_PI = require( '@stdlib/constants-float32-two-pi' );
var sincosf = require( '@stdlib/math-base-special-sincosf' );

var opts = {
    'dtype': 'float32'
};
var x = uniform( 100, 0.0, TWO_PI, opts );

var y;
var i;
for ( i = 0; i < x.length; i++ ) {
    y = sincosf( x[ i ] );
    console.log( 'sincosf(%d) = [ %d, %d ]', x[ i ], y[ 0 ], y[ 1 ] );
}

C APIs

Usage

#include "stdlib/math/base/special/sincosf.h"

stdlib_base_sincosf( x, &sine, &cosine )

Simultaneously computes the sine and cosine of a single-precision floating-point number (in radians).

float cosine;
float sine;

stdlib_base_sincosf( 4.0f, &sine, &cosine );

The function accepts the following arguments:

• x: [in] float input value.
• sine: [out] float* destination for the sine.
• cosine: [out] float* destination for the cosine.

void stdlib_base_sincosf( const float x, float *sine, float *cosine );

Examples

#include "stdlib/math/base/special/sincosf.h"
#include <stdio.h>

int main( void ) {
    const float x[] = { 0.0f, 1.57f, 3.14f, 6.28f };

    float cosine;
    float sine;
    int i;
    for ( i = 0; i < 4; i++ ) {
        stdlib_base_sincosf( x[ i ], &sine, &cosine );
        printf( "sincosf(%f) = [ %f, %f ]\n", x[ i ], sine, cosine );
    }
}

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.

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Copyright

Copyright © 2016-2026. The Stdlib Authors.