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23.4.3.6 Arithmetic In Guile

The (gdb) module provides several functions for performing arithmetic on <gdb:value> objects. The arithmetic is performed as if it were done by the target, and therefore has target semantics which are not necessarily those of Scheme. For example operations work with a fixed precision, not the arbitrary precision of Scheme.

Wherever a function takes an integer or pointer as an operand, GDB will convert appropriate Scheme values to perform the operation.

Scheme Procedure: value-add a b
Scheme Procedure: value-sub a b
Scheme Procedure: value-mul a b
Scheme Procedure: value-div a b
Scheme Procedure: value-rem a b
Scheme Procedure: value-mod a b
Scheme Procedure: value-pow a b
Scheme Procedure: value-not a
Scheme Procedure: value-neg a
Scheme Procedure: value-pos a
Scheme Procedure: value-abs a
Scheme Procedure: value-lsh a b
Scheme Procedure: value-rsh a b
Scheme Procedure: value-min a b
Scheme Procedure: value-max a b
Scheme Procedure: value-lognot a
Scheme Procedure: value-logand a b
Scheme Procedure: value-logior a b
Scheme Procedure: value-logxor a b
Scheme Procedure: value=? a b
Scheme Procedure: value<? a b
Scheme Procedure: value<=? a b
Scheme Procedure: value>? a b
Scheme Procedure: value>=? a b

Scheme does not provide a not-equal function, and thus Guile support in GDB does not either.


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