@stdlib/esm/stats/base/dists/chi/pdf.js

ES module distribution for Stdlib, a standard library for JavaScript and Node.js.

// This file is a part of stdlib. License is Apache-2.0: http://www.apache.org/licenses/LICENSE-2.0
import r from"./../../../../utils/define-nonenumerable-read-only-property.js";import t from"./../../../../math/base/assert/is-nan.js";import a from"./../../../../math/base/special/gamma.js";import o from"./../../../../math/base/special/exp.js";import e from"./../../../../math/base/special/pow.js";import n from"./../../../../constants/math/float64-pinf.js";import m from"./../../../../utils/constant-function.js";import s from"./../degenerate/pdf.js";var i=t,f=a,p=o,u=e,c=n;function l(r,t){var a,o;return i(r)||i(t)||t<0?NaN:0===t?0===r?c:0:r<0?0:(a=u(2,1-(o=t/2))*u(r,t-1)*p(-r*r/2),a/=f(o))}var j=m,v=s.factory,N=t,b=a,d=o,h=e;function y(r){var t,a;return N(r)||r<0?j(NaN):0===r?v(0):(a=r/2,t=r-1,function(r){var o;if(N(r))return NaN;if(r<0)return 0;return o=h(2,1-a)*h(r,t)*d(-r*r/2),o/=b(a)})}var g=r,x=l,w=y;g(x,"factory",w);export default x;
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