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21.2.5 Exact and Inexact Numbers
R5RS requires that a calculation involving inexact numbers always
produces an inexact result. To meet this requirement, Guile
distinguishes between an exact integer value such as 5 and the
corresponding inexact real value which, to the limited precision
available, has no fractional part, and is printed as 5.0. Guile
will only convert the latter value to the former when forced to do so by
an invocation of the inexact->exact procedure.
| exact? x
|
Scheme Procedure |
| scm_exact_p (x)
|
C Function |
Return #t if x is an exact number, #f
otherwise.
|
| inexact? x
|
Scheme Procedure |
| scm_inexact_p (x)
|
C Function |
Return #t if x is an inexact number, #f
else.
|
| inexact->exact z
|
Scheme Procedure |
| scm_inexact_to_exact (z)
|
C Function |
|
Return an exact number that is numerically closest to z.
|
| exact->inexact z
|
Scheme Procedure |
|
Convert the number z to its inexact representation.
|