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UDF compiling error

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Old   April 19, 2013, 20:47
Default UDF compiling error
Join Date: Apr 2012
Posts: 48
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vagaikwa is on a distinguished road
Hello guys,
I am writing a UDF, and following is the error which I am getting. Can someone please help me to eliminate it?

#include "udf.h"

#include "stdio.h"

#include "math.h"

#define lambda 0.11

#define erbc 0.45

#define mup 0.001



real mu_blood,gamma,a,n,m,ko,shear_rate;

gamma = C_STRAIN_RATE_MAG(c,t);

/*Calculating Dimensionless shear rate*/

shear_rate = 1+pow((lambda*gamma),2);




n = 0.8092*(pow(erbc,3))-0.8246*(pow(erbc,2))-0.3503*erbc+1;



/*Low shear rate*/



n = ko*(-0.8913*(pow(erbc,3))+2.0679*(pow(erbc,2))-1.7814*erbc)+1;



a = 0.5*(n-1);

/*Multiplying dimensionless shear rate by viscosity of plasma 0.001*/

mu_blood = mup*m*(pow(shear_rate,a));

return mu_blood;


This is the error..
Creating library libudf.lib and object libudf.exp
mod_carreau.obj : error LNK2019: unresolved external symbol ln referenced in function cumul_viscosity
libudf.dll : fatal error LNK1120: 1 unresolved externals

Any help in this regard is highly appreciated. Thanks.
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Old   April 19, 2013, 21:26
Join Date: Apr 2012
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vagaikwa is on a distinguished road
I guess the reason was because of the natural log..I could load it successfully.
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