Issue defining an UDF

[ypglez96]

Hi!, anyone can help me to identify the mistake in the following UDF please

#include "udf.h"

 

#define N_SOURCES 39

 

const static real F[N_SOURCES] = {

0.00396399, 

0.00397615, 

0.00395948, 

0.0039312,  

0.00382969,

0.0036884,  

0.00387387, 

0.00385565, 

0.00397089, 

0.00386617,

0.00384009, 

0.00389486, 

0.00372965, 

0.00365257, 

0.00386212,

0.00398893, 

0.00388632, 

0.00388224, 

0.00390604, 

0.00375784,

0.00364968, 

0.00399214, 

0.00396672, 

0.00379819, 

0.00365401,

0.00394434, 

0.00398073, 

0.00394522, 

0.00373293, 

0.0036275,

0.00383483, 

0.00366572, 

0.00358861, 

0.00371025,

0.00358094,

0.00354702, 

0.00352607, 

0.00347636, 

0.00346994

};

 

real calculate_power(cell_t c, Thread *t, int index)

{

real centroid[ND_ND];

real y, Q;

 

C_CENTROID(centroid, c, t);

y = centroid[1];

 

Q = (-7833.925 * pow(y, 4) + 31425.223 * pow(y, 3) - 79722.626 * pow(y, 2) + 96939.861 * y) * 1e6;

 

return F[index] * Q;

}

 

DEFINE_SOURCE(power1, c, t, dS, eqn) { return calculate_power(c, t, 0); }

DEFINE_SOURCE(power2, c, t, dS, eqn) { return calculate_power(c, t, 1); }

DEFINE_SOURCE(power3, c, t, dS, eqn) { return calculate_power(c, t, 2); }

DEFINE_SOURCE(power4, c, t, dS, eqn) { return calculate_power(c, t, 3); }

DEFINE_SOURCE(power5, c, t, dS, eqn) { return calculate_power(c, t, 4); }

DEFINE_SOURCE(power6, c, t, dS, eqn) { return calculate_power(c, t, 5); }

DEFINE_SOURCE(power7, c, t, dS, eqn) { return calculate_power(c, t, 6); }

DEFINE_SOURCE(power8, c, t, dS, eqn) { return calculate_power(c, t, 7); }

DEFINE_SOURCE(power9, c, t, dS, eqn) { return calculate_power(c, t, 8); }

DEFINE_SOURCE(power10, c, t, dS, eqn) { return calculate_power(c, t, 9); }

DEFINE_SOURCE(power11, c, t, dS, eqn) { return calculate_power(c, t, 10); }

DEFINE_SOURCE(power12, c, t, dS, eqn) { return calculate_power(c, t, 11); }

DEFINE_SOURCE(power13, c, t, dS, eqn) { return calculate_power(c, t, 12); }

DEFINE_SOURCE(power14, c, t, dS, eqn) { return calculate_power(c, t, 13); }

DEFINE_SOURCE(power15, c, t, dS, eqn) { return calculate_power(c, t, 14); }

DEFINE_SOURCE(power16, c, t, dS, eqn) { return calculate_power(c, t, 15); }

DEFINE_SOURCE(power17, c, t, dS, eqn) { return calculate_power(c, t, 16); }

DEFINE_SOURCE(power18, c, t, dS, eqn) { return calculate_power(c, t, 17); }

DEFINE_SOURCE(power19, c, t, dS, eqn) { return calculate_power(c, t, 18); }

DEFINE_SOURCE(power20, c, t, dS, eqn) { return calculate_power(c, t, 19); }

DEFINE_SOURCE(power21, c, t, dS, eqn) { return calculate_power(c, t, 20); }

DEFINE_SOURCE(power22, c, t, dS, eqn) { return calculate_power(c, t, 21); }

DEFINE_SOURCE(power23, c, t, dS, eqn) { return calculate_power(c, t, 22); }

DEFINE_SOURCE(power24, c, t, dS, eqn) { return calculate_power(c, t, 23); }

DEFINE_SOURCE(power25, c, t, dS, eqn) { return calculate_power(c, t, 24); }

DEFINE_SOURCE(power26, c, t, dS, eqn) { return calculate_power(c, t, 25); }

DEFINE_SOURCE(power27, c, t, dS, eqn) { return calculate_power(c, t, 26); }

DEFINE_SOURCE(power28, c, t, dS, eqn) { return calculate_power(c, t, 27); }

DEFINE_SOURCE(power29, c, t, dS, eqn) { return calculate_power(c, t, 28); }

DEFINE_SOURCE(power30, c, t, dS, eqn) { return calculate_power(c, t, 29); }

DEFINE_SOURCE(power31, c, t, dS, eqn) { return calculate_power(c, t, 30); }

DEFINE_SOURCE(power32, c, t, dS, eqn) { return calculate_power(c, t, 31); }

DEFINE_SOURCE(power33, c, t, dS, eqn) { return calculate_power(c, t, 32); }

DEFINE_SOURCE(power34, c, t, dS, eqn) { return calculate_power(c, t, 33); }

DEFINE_SOURCE(power35, c, t, dS, eqn) { return calculate_power(c, t, 34); }

DEFINE_SOURCE(power36, c, t, dS, eqn) { return calculate_power(c, t, 35); }

DEFINE_SOURCE(power37, c, t, dS, eqn) { return calculate_power(c, t, 36); }

DEFINE_SOURCE(power38, c, t, dS, eqn) { return calculate_power(c, t, 37); }

DEFINE_SOURCE(power39, c, t, dS, eqn) { return calculate_power(c, t, 38); }

 

 

I get this error when I try to compile it

(chdir "power")(chdir "win64\3d_node")udf_names.c

udf_names.c(45): error C2059: error de sintaxis: ';'

udf_names.c(45): error C2059: error de sintaxis: '}'

udf_names.c(46): error C2059: error de sintaxis: ','

udf_names.c(46): error C2059: error de sintaxis: '}'

udf_names.c(47): error C2059: error de sintaxis: ','

udf_names.c(47): error C2059: error de sintaxis: '}'

udf_names.c(48): error C2059: error de sintaxis: ','

udf_names.c(48): error C2059: error de sintaxis: '}'

udf_names.c(49): error C2059: error de sintaxis: ','

udf_names.c(49): error C2059: error de sintaxis: '}'

udf_names.c(50): error C2059: error de sintaxis: ','

udf_names.c(50): error C2059: error de sintaxis: '}'

udf_names.c(51): error C2059: error de sintaxis: ','

udf_names.c(51): error C2059: error de sintaxis: '}'

udf_names.c(52): error C2059: error de sintaxis: ','

udf_names.c(52): error C2059: error de sintaxis: '}'

udf_names.c(53): error C2059: error de sintaxis: ','

udf_names.c(53): error C2059: error de sintaxis: '}'

udf_names.c(54): error C2059: error de sintaxis: ','

udf_names.c(54): error C2059: error de sintaxis: '}'

udf_names.c(55): error C2059: error de sintaxis: ','

udf_names.c(55): error C2059: error de sintaxis: '}'

udf_names.c(56): error C2059: error de sintaxis: ','

udf_names.c(56): error C2059: error de sintaxis: '}'

udf_names.c(57): error C2059: error de sintaxis: ','

udf_names.c(57): error C2059: error de sintaxis: '}'

udf_names.c(58): error C2059: error de sintaxis: ','

udf_names.c(58): error C2059: error de sintaxis: '}'

udf_names.c(59): error C2059: error de sintaxis: ','

udf_names.c(59): error C2059: error de sintaxis: '}'

udf_names.c(60): error C2059: error de sintaxis: ','

udf_names.c(60): error C2059: error de sintaxis: '}'

udf_names.c(61): error C2059: error de sintaxis: ','

udf_names.c(61): error C2059: error de sintaxis: '}'

udf_names.c(62): error C2059: error de sintaxis: ','

udf_names.c(62): error C2059: error de sintaxis: '}'

udf_names.c(63): error C2059: error de sintaxis: ','

udf_names.c(63): error C2059: error de sintaxis: '}'

udf_names.c(64): error C2059: error de sintaxis: ','

udf_names.c(64): error C2059: error de sintaxis: '}'

udf_names.c(65): error C2059: error de sintaxis: ','

udf_names.c(65): error C2059: error de sintaxis: '}'

udf_names.c(66): error C2059: error de sintaxis: ','

udf_names.c(66): error C2059: error de sintaxis: '}'

udf_names.c(67): error C2059: error de sintaxis: ','

udf_names.c(67): error C2059: error de sintaxis: '}'

udf_names.c(68): error C2059: error de sintaxis: ','

udf_names.c(68): error C2059: error de sintaxis: '}'

udf_names.c(69): error C2059: error de sintaxis: ','

udf_names.c(69): error C2059: error de sintaxis: '}'

udf_names.c(70): error C2059: error de sintaxis: ','

udf_names.c(70): error C2059: error de sintaxis: '}'

udf_names.c(71): error C2059: error de sintaxis: ','

udf_names.c(71): error C2059: error de sintaxis: '}'

udf_names.c(72): error C2059: error de sintaxis: ','

udf_names.c(72): error C2059: error de sintaxis: '}'

udf_names.c(73): error C2059: error de sintaxis: ','

udf_names.c(73): error C2059: error de sintaxis: '}'

udf_names.c(74): error C2059: error de sintaxis: ','

udf_names.c(74): error C2059: error de sintaxis: '}'

udf_names.c(75): error C2059: error de sintaxis: ','

udf_names.c(75): error C2059: error de sintaxis: '}'

udf_names.c(76): error C2059: error de sintaxis: ','

udf_names.c(76): error C2059: error de sintaxis: '}'

udf_names.c(77): error C2059: error de sintaxis: ','

udf_names.c(77): error C2059: error de sintaxis: '}'

udf_names.c(78): error C2059: error de sintaxis: ','

udf_names.c(78): error C2059: error de sintaxis: '}'

udf_names.c(79): error C2059: error de sintaxis: ','

udf_names.c(79): error C2059: error de sintaxis: '}'

udf_names.c(80): error C2059: error de sintaxis: ','

udf_names.c(80): error C2059: error de sintaxis: '}'

udf_names.c(81): error C2059: error de sintaxis: ','

udf_names.c(81): error C2059: error de sintaxis: '}'

udf_names.c(82): error C2059: error de sintaxis: ','

udf_names.c(82): error C2059: error de sintaxis: '}'

udf_names.c(83): error C2059: error de sintaxis: ','

udf_names.c(83): error C2059: error de sintaxis: '}'

udf_names.c(84): warning C4034: sizeof devuelve 0

[Rob]

Have a look at the DEFINE_SOURCE example in the manual. Staff don't debug code. Maybe try with just one source to figure out what's going on?

[Mark O]

As Rob says, look at the examples for DEFINE_SOURCE. The open close brackets are always on a newline. eg

 

DEFINE_SOURCE(power1, c, t, dS, eqn)

{

return calculate_power(c, t, 0);

}

The visual studio compiler will fail with a syntax error if they are not. It works with the built-in clang compiler but you want your code to work with any of the supported compilers.

[jcooper]

Hi: 

I wonder if there could be a strange character in your code that is preventing the brackets from being recognized properly? I would suggest opening it in Notepad++ and checking that the encoding is UTF-8.  Then, save the UDF.

I copied your UDF verbatim from this thread, saved it from Notepad with this encoding and was able to compile it with the the Fluent built-in compiler. I run with one of the hooked source terms and it produced heat. 

Regards,

Judy

 

Below is the output from my compile:

Copyright 1987-2025 ANSYS, Inc. All Rights Reserved.

Compiler and linker: Clang (builtin)

 

scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly

File "F:\FORUM\UDF\libudf\win64\3ddp_host\SConstruct", line 20, in

Compiler path: "C:\PROGRA~1\ANSYSI~1\v251\fluent"\ntbin\clang\bin\clang-cl

Linker path: "C:\PROGRA~1\ANSYSI~1\v251\fluent"\ntbin\clang\bin\lld-link

 

scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly

File "F:\FORUM\UDF\libudf\win64\3ddp_host\SConstruct", line 156, in

C sources: ['sorce.c']

 

Copyright 1987-2025 ANSYS, Inc. All Rights Reserved.

Compiler and linker: Clang (builtin)

 

scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly

File "F:\FORUM\UDF\libudf\win64\3ddp_node\SConstruct", line 20, in

Compiler path: "C:\PROGRA~1\ANSYSI~1\v251\fluent"\ntbin\clang\bin\clang-cl

Linker path: "C:\PROGRA~1\ANSYSI~1\v251\fluent"\ntbin\clang\bin\lld-link

 

scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly

File "F:\FORUM\UDF\libudf\win64\3ddp_node\SConstruct", line 156, in

C sources: ['sorce.c']

 

AAPgunEctX8QxJN: Opening library "F:\FORUM\UDF\libudf"...

Done.

 

AAPgunEctX8QxJN: Opening library "F:\FORUM\UDF\libudf"...

power1

power2

power3

power4

power5

power6

power7

power8

power9

power10

power11

power12

power13

power14

power15

power16

power17

power18

power19

power20

power21

power22

power23

power24

power25

power26

power27

power28

power29

power30

power31

power32

power33

power34

power35

power36

power37

power38

power39

Done.

 

Done.