Compiling Fortran, error message: undefined reference to `asinh_'

[Pearl11]

Hello,

This is the first time I use Fortran, and I get an error which I can't find a solution to because I'm not familiar with the language. I'm running a program which worked for someone else, so I think the error has to do with the version or the Libraries which are included on my machine. I'm submitting from a Linux terminal and compiling using f77. This is the error message:

undefined reference to `asinh_'

Does anyone know what's needed here?

Thanks a bunch for your help,
Pearl11

 

[xwb]

How are you building your program? Is it something like

gfortran xxx.f77 -o xxx

 

[gullipe]

Dear Perl11

If ASINH is not in your Fortran library (which it is probably not), then you can use this:

!-
    DOUBLE PRECISION X 
    DOUBLE PRECISION ASINH 
    ASINH(X)=LOG(X+SQRT(X**2+1.))

 

[Pearl11]

Hi, thanks to the both of you for your replies. Since f77 compilier doesn't support the asinh function, I changed F77=f77 to F77=gfortran in my makefile and the program ran