IF_GOTO - Conditional jump (Scripting operation)

PURPOSE

To allow jumps to other locations in the command stream depending on the validity of equalities or inequalities. Modeled after the FORTRAN logical 'IF'.

SEE ALSO

IF	[Conditional expression execution (Scripting operation)]
IF_THEN	[Conditional execution of operations (Scripting operation)]
GOTO	[GOTO (Scripting operation)]
DO	[Start of DO loop (Scripting operation)]

USAGE

.OPERATION: IF(<EXP>.<LC>.<EXP>) GOTO LB<N>

Where:

1. <EXP> is an expression
2. <LC> is a logical comparator. The following comparators are allowed:

EQ equal

NE not equal

GT greater

GE greater/equal

LT less

LE less/equal

EXAMPLES:

IF([loop].GE.15) GOTO LB9

IF ([xsize].LT.[ysize]) GOTO LB12

NOTES

1. Only forward jumping is allowed. No jumping into a DO-loop.

SUBROUTINES

LOGIFQ

CALLER

SPIDER