@stdlib/esm/math/base/special/besselj0.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"./sqrt.js";import t from"./sincos.js";import n from"./../../../constants/math/float64-pinf.js";function o(r){var t,n;return 0===r?-.17291506903064494:((r<0?-r:r)<=1?(t=r*(27282507878.60594+r*(r*(6630299.79048338+r*(r*(103.44222815443189+-.12117036164593528*r)-36629.81465510709))-621407004.2354012))-412986685009.9087,n=2388378799633.229+r*(26328198300.85965+r*(139850973.72263435+r*(456126.9622421994+r*(936.1402239233771+r*(1+0*r)))))):(t=(r=1/r)*(103.44222815443189+r*(r*(6630299.79048338+r*(r*(27282507878.60594+-412986685009.9087*r)-621407004.2354012))-36629.81465510709))-.12117036164593528,n=0+r*(1+r*(936.1402239233771+r*(456126.9622421994+r*(139850973.72263435+r*(26328198300.85965+2388378799633.229*r)))))),t/n)}function a(r){var t,n;return 0===r?.005119512965174424:((r<0?-r:r)<=1?(t=r*(r*(r*(10341.910641583727+r*(11725.046279757104+r*(4417.670702532509+r*(743.2119668062425+48.5917033559165*r))))-7287.970246446462)-12254.07816137899)-1831.9397969392085,n=r*(245991.0226258631+r*(r*(18680.99000835919+r*(r*(333.07310774649073+r*(1*r-25.258076240801554))-2945.876654550934))-84055.06259116957))-357834.78026152303):(t=48.5917033559165+(r=1/r)*(743.2119668062425+r*(4417.670702532509+r*(11725.046279757104+r*(10341.910641583727+r*(r*(-1831.9397969392085*r-12254.07816137899)-7287.970246446462))))),n=1+r*(r*(333.07310774649073+r*(r*(18680.99000835919+r*(r*(245991.0226258631+-357834.78026152303*r)-84055.06259116957))-2945.876654550934))-25.258076240801554)),t/n)}function f(r){var t,n;return 0===r?1:((r<0?-r:r)<=1?(t=22779.090197304686+r*(41345.38663958076+r*(21170.523380864943+r*(3480.648644324927+r*(153.76201909008356+.8896154842421046*r)))),n=22779.090197304686+r*(41370.41249551042+r*(21215.350561880117+r*(3502.8735138235606+r*(157.11159858080893+1*r))))):(t=.8896154842421046+(r=1/r)*(153.76201909008356+r*(3480.648644324927+r*(21170.523380864943+r*(41345.38663958076+22779.090197304686*r)))),n=1+r*(157.11159858080893+r*(3502.8735138235606+r*(21215.350561880117+r*(41370.41249551042+22779.090197304686*r))))),t/n)}function u(r){var t,n;return 0===r?-.015625:((r<0?-r:r)<=1?(t=r*(r*(r*(r*(-.008803330304868075*r-1.244102674583564)-22.300261666214197)-111.83429920482737)-185.91953644342993)-89.22660020080009,n=5710.502412851206+r*(11951.131543434614+r*(7264.278016921102+r*(1488.7231232283757+r*(90.59376959499312+1*r))))):(t=(r=1/r)*(r*(r*(r*(-89.22660020080009*r-185.91953644342993)-111.83429920482737)-22.300261666214197)-1.244102674583564)-.008803330304868075,n=1+r*(90.59376959499312+r*(1488.7231232283757+r*(7264.278016921102+r*(11951.131543434614+5710.502412851206*r))))),t/n)}var i=r,s=t,c=n,e=o,m=a,v=f,p=u,j=.5641895835477563,l=2.404825557695773,d=5.520078110286311,h=616,q=-.0014244423042272315,x=1413,b=.0005468602863106496,g=[0,0];function k(r){var t,n,o,a,f,u;return r<0&&(r=-r),r===c?0:0===r?1:r<=4?(a=e(f=r*r),(u=(r+l)*(r-h/256-q))*a):r<=8?(a=m(f=1-r*r/64),(u=(r+d)*(r-x/256-b))*a):(t=v(o=(f=8/r)*f),n=p(o),u=j/i(r),s(g,r),u*(t*(g[1]+g[0])-f*n*(g[0]-g[1])))}var w=k;export default w;
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