Compiler Preprocessor (size)

Preprocessing: the preprocessor searches a set of sources files for a specific set of symbols, replace those symbols with other symbols or numbers, perform simple arithmetic, and write the result to a new set of files.

• Predefine array dimensions
• Turn on/off certain function calls
• Include or exclude certain physical models
• Include or exclude visualization capability
• Include or exclude parallel communications
• Include or exclude multiblock interface cal.
• Example 1: predefine array dimensions
  • In a size control file, frame1.siz
  Replace_Symbols
  MXBLKS 3
  • In a source file, mcontrol.dh
  INTEGER blkmodel($MXBLKS)
  • In the target file after preprocessed, mcontrol.h
  INTEGER blkmodel(3)
• Example 2: exclude physical models
  • In source file ipars.df
  $BLKCKI CALL ISTEP(KERR)
  $HYDROI CALL HSTEP(KERR)
  $TRCHEM CALL TRSTEP(KERR)
  • In the target file after preprocessed, ipars.f
  CALL ISTEP(KERR) (if blacki.siz is included)
  C CALL HSTEP(KERR)
  C CALL TRSTEP(KERR)
• Example 3: exclude parallel communications
  • In source file istep.df
  $MANY CALL UPDATE(N_PWAT,1)
  • In the target file after preprocessed, istep.f
  C CALL UPDATE(N_PWAT,1) (if lnx.siz is included)
  CALL UPDATE(N_PWAT,1) (if beo.siz is included)