• IMSL is a VNI (Visual Numerics, Inc.) product; the two names are used somewhat synonymously
• To see the versions of IMSL/VNI available on the U-System, type
  setup -l(that option is dash, lowercase "L")
• To obtain access to the IMSL libraries, type
  setup imsl
• The above command will provide access to the directories where the IMSL subroutines are located and will setup several variables on which certain subroutines depend, e.g., math, Fortran, C, parallel-processing, exponential, and graphics subroutines.
• IMSL documentation is available in PDF format.
• Here is a complete list of IMSL Subroutines.

Examples

• A Fortran program:
  
  f90 -O3 -w -o ex_imsl1 imsl1.f $FFLAGS $LINK_FNL
  The setup imsl command will assign values to the variables FFLAGS and LINK_FNL. If you want to know what these variable are type at the prompt:
  echo $FFLAGS or
  
  
  echo $LINK_FNL
• A C program:
  
  cc -w -o imslc imslc.c $CFLAGS $LINK_CNL
• This is a Makefile sample to link your program with IMSL subroutines. It uses the FFLAGS and LINK_FNL variables.
• Please note that IMSL considers f77 as a subset of f90. Therefore all fortran codes must be compiled with the f90 command.