Package Exports
- @stdlib/math-base-special-negafibonaccif
- @stdlib/math-base-special-negafibonaccif/dist
- @stdlib/math-base-special-negafibonaccif/dist/index.js
- @stdlib/math-base-special-negafibonaccif/lib/index.js
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@stdlib/math-base-special-negafibonaccif) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
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negaFibonaccif
Compute the nth negaFibonacci number as a single-precision floating-point number.
The negaFibonacci numbers are the integer sequence
The sequence is defined by the recurrence relation
which yields
with seed values F_0 = 0 and F_{-1} = 1.
Installation
npm install @stdlib/math-base-special-negafibonaccifUsage
var negafibonaccif = require( '@stdlib/math-base-special-negafibonaccif' );negafibonaccif( n )
Computes the nth negaFibonacci number as a single-precision floating-point number.
var v = negafibonaccif( 0 );
// returns 0
v = negafibonaccif( -1 );
// returns 1
v = negafibonaccif( -2 );
// returns -1
v = negafibonaccif( -3 );
// returns 2
v = negafibonaccif( -36 );
// returns -14930352If n < -36, the function returns NaN, as larger negaFibonacci numbers cannot be safely represented in single-precision floating-point format.
var v = negafibonaccif( -37 );
// returns NaNIf not provided a nonpositive integer value, the function returns NaN.
var v = negafibonaccif( -3.14 );
// returns NaN
v = negafibonaccif( 1 );
// returns NaNIf provided NaN, the function returns NaN.
var v = negafibonaccif( NaN );
// returns NaNExamples
var logEachMap = require( '@stdlib/console-log-each-map' );
var linspace = require( '@stdlib/array-base-linspace' );
var negafibonaccif = require( '@stdlib/math-base-special-negafibonaccif' );
var v = linspace( -36, 0, 37 );
logEachMap( 'negafibonaccif(%d) = %0.4f', v, negafibonaccif );C APIs
Usage
#include "stdlib/math/base/special/negafibonaccif.h"stdlib_base_negafibonaccif( n )
Computes the nth negaFibonacci number as a single-precision floating-point number.
float out = stdlib_base_negafibonaccif( 0.0f );
// returns 0.0f
out = stdlib_base_negafibonaccif( -1.0f );
// returns 1.0fThe function accepts the following arguments:
- n:
[in] floatinput value.
float stdlib_base_negafibonaccif( const float n );Examples
#include "stdlib/math/base/special/negafibonaccif.h"
#include <stdio.h>
int main( void ) {
float i;
float v;
for ( i = 0.0f; i > -37.0f; i-- ) {
v = stdlib_base_negafibonaccif( i );
printf( "negafibonaccif(%f) = %f\n", i, v );
}
}Notice
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License
See LICENSE.
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