# convert Javascript to VBscript

• ### Question

• I've got a Javascript (JS) that I'd like to convert into a VBscript (VBS).

Unfortunately I am not able to find a sort of a translation from JS to VBS for math-functions.

I hope someone might have an idea about how to best perform this taks and appreciate your feedback.

Thanks, Carlos.

Here is the JS script:

function LogGamma(Z) {
with (Math) {
var S=1+76.18009173/Z-86.50532033/(Z+1)+24.01409822/(Z+2)-1.231739516/(Z+3)+.00120858003/(Z+4)-.00000536382/(Z+5);
var LG= (Z-.5)*log(Z+4.5)-(Z+4.5)+log(S*2.50662827465);
}
return LG
}

function Betinc(X,A,B) {
var A0=0;
var B0=1;
var A1=1;
var B1=1;
var M9=0;
var A2=0;
var C9;
while (Math.abs((A1-A2)/A1)>.00001) {
A2=A1;
C9=-(A+M9)*(A+B+M9)*X/(A+2*M9)/(A+2*M9+1);
A0=A1+C9*A0;
B0=B1+C9*B0;
M9=M9+1;
C9=M9*(B-M9)*X/(A+2*M9-1)/(A+2*M9);
A1=A0+C9*A1;
B1=B0+C9*B1;
A0=A0/B1;
B0=B0/B1;
A1=A1/B1;
B1=1;
}
return A1/A
}

function compute(Z,A,B) {
with (Math) {
if (A<=0) {
} else if (B<=0) {
} else if (Z<=0) {
Betacdf=0
} else if (Z>=1) {
Betacdf=1
} else {
S=A+B;
BT=exp(LogGamma(S)-LogGamma(B)-LogGamma(A)+A*log(Z)+B*log(1-Z));
if (Z<(A+1)/(S+2)) {
Betacdf=BT*Betinc(Z,A,B)
} else {
Betacdf=1-BT*Betinc(1-Z,B,A)
}
}
Betacdf=Betacdf+.000005
s = Betacdf
}
return s
}

function BuscarAlfa(ObjetivoMenor60)
{
var Alfa = 2;
var Beta = 2;
var A = 0;
var B = 1;
var NivelConfianza = 0.97;
var DistrBetas;
var DistrMonetaria;
var DistrBetasMonetaria;
var iteraciones = 0;

DistrBetas = compute(ObjetivoMenor60,Alfa,Beta)

if (DistrBetas >= NivelConfianza) {
while (DistrBetas >= NivelConfianza) {
DistrBetas = compute(ObjetivoMenor60,Alfa,Beta)
Alfa = Alfa + 0.0001
}
} else {
while (DistrBetas <= NivelConfianza) {
DistrBetas = compute(ObjetivoMenor60,Alfa,Beta)
Alfa = Alfa - 0.0001
}
}

return Alfa
}

function BuscarBeta(Alfa, ObjetivoAlDia, Cartera)
{
var Beta = 2;
var DistrMonetaria;
var DistrBetasMonetaria;

DistrMonetaria = ObjetivoAlDia * Cartera
DistrBetasMonetaria = compute(ObjetivoAlDia, Alfa, Beta) * Cartera

if (DistrBetasMonetaria <= DistrMonetaria) {
while (DistrBetasMonetaria <= DistrMonetaria) {
DistrBetasMonetaria = compute(ObjetivoAlDia, Alfa, Beta) * Cartera
if (DistrBetasMonetaria >= DistrMonetaria) {
break
}
Beta = Beta + 0.0001
}
} else {
while (DistrBetasMonetaria >= DistrMonetaria) {
DistrBetasMonetaria = compute(ObjetivoAlDia, Alfa, Beta) * Cartera
if (DistrBetasMonetaria <= DistrMonetaria) {
break
}
Beta = Beta - 0.0001
}
}

return Beta

}

• Moved by Tuesday, December 5, 2017 3:13 PM This is not "scripts on demand"
Wednesday, October 25, 2017 10:51 PM