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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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