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Intrensic error

Intrensic error

RE: Intrensic error

As the compiler said, both arguments of the SIGN function must be of the same type.

On the beginning of your program you have this declaration
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
that means that your variables GFIX and GAMFLT are double precision.
But the constant .1 seems to be handled by the compiler as single precision constant. To make it double precision use for example this notation with double precision exponent: 0.1D0
So instead of
DELTAL = SIGN (.1,(GFIX-GAMFLT))
try to use
DELTAL = SIGN (0.1D0,(GFIX-GAMFLT))
and see if it helps.

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