Compute the arccosine in degrees of a double-precision floating-point number.
var acosd = require( '@stdlib/math/base/special/acosd' );Computes the arccosine (in degrees) of a double-precision floating-point number.
var sqrt = require( '@stdlib/math/base/special/sqrt' );
var v = acosd( 0.0 );
// returns 90.0
v = acosd( 0.5 );
// returns ~60.0
v = acosd( sqrt( 2 ) / 2 );
// returns ~45.0
v = acosd( sqrt( 3 ) / 2 );
// returns ~30.0
v = acosd( NaN );
// returns NaNThe domain of x is restricted to [-1,1]. If |x| > 1, the function returns NaN.
var v = acosd( -3.14 );
// returns NaNvar uniform = require( '@stdlib/random/array/uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var acosd = require( '@stdlib/math/base/special/acosd' );
var x = uniform( 100, -1.0, 1.0, {
'dtype': 'float64'
});
logEachMap( 'acosd(%0.4f) = %0.4f', x, acosd );#include "stdlib/math/base/special/acosd.h"Computes the arccosine (in degrees) of a double-precision floating-point number.
double out = stdlib_base_acosd( 0.0 );
// returns 90.0
out = stdlib_base_acosd( 0.5 );
// returns ~60.0The function accepts the following arguments:
- x:
[in] doubleinput value.
double stdlib_base_acosd( const double x );#include "stdlib/math/base/special/acosd.h"
#include <stdio.h>
int main( void ) {
const double x[] = { 1.0, 1.45, 1.89, 2.33, 2.78, 3.22, 3.66, 4.11, 4.55, 5.0 };
double v;
int i;
for ( i = 0; i < 10; i++ ) {
v = stdlib_base_acosd( x[ i ] );
printf( "acosd(%lf) = %lf\n", x[ i ], v );
}
}@stdlib/math/base/special/acos: compute the arccosine of a double-precision floating-point number.@stdlib/math/base/special/acosdf: compute the arccosine (in degrees) of a single-precision floating-point number.@stdlib/math/base/special/acosh: compute the hyperbolic arccosine of a double-precision floating-point number.@stdlib/math/base/special/asind: compute the arcsine (in degrees) of a double-precision floating-point number.@stdlib/math/base/special/atand: compute the arctangent (in degrees) of a double-precision floating-point number.