next up previous 252
Next: F77_UBYTE_TYPE - Define the type UBYTE
Up: Full Description of F77 Macros
Previous: F77_SUBROUTINE - Declare a SUBROUTINE


F77_TRUE - The logical value TRUE

Description:
Expand to the number that FORTRAN treats as a logical value of TRUE.

Invocation:
F77_TRUE

Examples:

F77_TRUE
will expand as follows:

Solaris: 1
OSF/1: -1
VAX/VMS: -1


Notes:
FORTRAN and C might not interpret the same numerical value as the same logical value.



next up previous 252
Next: F77_UBYTE_TYPE - Define the type UBYTE
Up: Full Description of F77 Macros
Previous: F77_SUBROUTINE - Declare a SUBROUTINE

CNF and F77 Mixed Language Programming -- FORTRAN and C
Starlink User Note 209
P.M. Allan
A.J. Chipperfield
R.F. Warren-Smith
19 January 2000
E-mail:ussc@star.rl.ac.uk