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Source for ticket #320
cc
changetime
2012-04-07 03:15:39
component
WG1 - Core
description
(In this ticket, "complex" is used for readability; it is synonymous with "non-real".)
This feature is true in implementations that support complex numbers such that both the real and the imaginary parts are exact; that is, if `(eqv? 3+4i 3.0+4.0i)` evaluates to `#f`. This feature is false if complex numbers are not supported or if only inexact complex numbers are supported. Most of the applications of complex numbers use inexact numbers, but some applications may require exactness: this feature allows those applications to fail fast on implementations that cannot support them.
Existing implementations:
* Exact complex numbers: Racket, MIT, Gambit, Chicken with the `numbers` egg, Scheme48/scsh, Kawa, Chibi, Chez, Vicare, Ypsilon, Mosh, !IronScheme, STklos, Wraith
* No exact complex numbers: Gauche, Guile, SISC, SCM, Scheme 7, KSi, UMB, Stalin
* No complex numbers: Chicken without the `numbers` egg, Bigloo, Ikarus, RScheme, Scheme 9, Oaklisp, Elk, VX, Sixx, Sizzle, Dream, Owl Lisp, Psyche
id
320
keywords
milestone
owner
alexshinn
priority
major
reporter
cowan
resolution
fixed
severity
status
closed
summary
Add new cond-expand feature to Appendix B: exact-complex
time
2012-01-01 03:42:10
type
defect
Changes
Change at time 2012-04-07 03:15:39
author
cowan
field
comment
newvalue
Correction: the WG voted to '''accept''' this procedure. However, nothing needs to be done, as it is already in the draft.
oldvalue
3
raw-time
1333743339111776
ticket
320
time
2012-04-07 03:15:39
Change at time 2012-04-07 03:15:39
author
cowan
field
resolution
newvalue
fixed
oldvalue
raw-time
1333743339111776
ticket
320
time
2012-04-07 03:15:39
Change at time 2012-04-07 03:15:39
author
cowan
field
status
newvalue
closed
oldvalue
decided
raw-time
1333743339111776
ticket
320
time
2012-04-07 03:15:39
Change at time 2012-04-05 08:52:00
author
cowan
field
comment
newvalue
The WG voted to reject this proposal.
oldvalue
2
raw-time
1333590720486072
ticket
320
time
2012-04-05 08:52:00
Change at time 2012-04-05 08:52:00
author
cowan
field
status
newvalue
decided
oldvalue
new
raw-time
1333590720486072
ticket
320
time
2012-04-05 08:52:00
Change at time 2012-01-05 02:13:22
author
cowan
field
comment
newvalue
This is actually in draft 5, but didn't exist when `cond-expand` was voted on, so we need to vote on it.
oldvalue
1
raw-time
1325700802430200
ticket
320
time
2012-01-05 02:13:22