— Scheme Procedure: exact->inexact z
— Scheme Procedure: inexact->exact z

These procedures are identical to the ones provided by Guile's core library. See Exactness, for documentation.

— Scheme Procedure: quotient n1 n2
— Scheme Procedure: remainder n1 n2
— Scheme Procedure: modulo n1 n2

These procedures are identical to the ones provided by Guile's core library. See Integer Operations, for documentation.

— Scheme Syntax: delay expr
— Scheme Procedure: force promise

The delay form and the force procedure are identical to their counterparts in Guile's core library. See Delayed Evaluation, for documentation.

— Scheme Procedure: null-environment n
— Scheme Procedure: scheme-report-environment n

These procedures are identical to the ones provided by the (ice-9 r5rs) Guile module. See Environments, for documentation.