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Source for ticket #121

cc


    

changetime

2012-10-12 01:01:11

component

WG1 - Core

description

This is an R6RS change.

id

121

keywords


    

milestone


    

owner

cowan

priority

major

reporter

cowan

resolution

fixed

severity


    

status

closed

summary

The semantics of expt for zero bases has been refined

time

2010-12-27 15:28:11

type

defect

Changes

Change at time 2012-10-12 01:01:11

author

cowan

field

comment

newvalue


    

oldvalue

8

raw-time

1349978471819671

ticket

121

time

2012-10-12 01:01:11

Change at time 2012-10-12 01:01:11

author

cowan

field

resolution

newvalue

fixed

oldvalue


    

raw-time

1349978471819671

ticket

121

time

2012-10-12 01:01:11

Change at time 2012-10-12 01:01:11

author

cowan

field

status

newvalue

closed

oldvalue

writing

raw-time

1349978471819671

ticket

121

time

2012-10-12 01:01:11

Change at time 2012-10-03 00:27:21

author

cowan

field

comment

newvalue


    

oldvalue

7

raw-time

1349198841388420

ticket

121

time

2012-10-03 00:27:21

Change at time 2012-10-03 00:27:21

author

cowan

field

status

newvalue

writing

oldvalue

decided

raw-time

1349198841388420

ticket

121

time

2012-10-03 00:27:21

Change at time 2012-10-03 00:27:15

author

cowan

field

comment

newvalue

WG1 decided to adopt slightly modified R5RS language, thus:

{{{
The value of 0^z is 1 if (zero? z), 0 if (real-part z)
is positive, and an error otherwise.  Similarly for 0.0^z,
with inexact results.
}}}

oldvalue

6

raw-time

1349198835005874

ticket

121

time

2012-10-03 00:27:15

Change at time 2012-10-03 00:27:15

author

cowan

field

status

newvalue

decided

oldvalue

reopened

raw-time

1349198835005874

ticket

121

time

2012-10-03 00:27:15

Change at time 2012-08-26 14:57:34

author

alexshinn

field

comment

newvalue

The rationale for R6RS making this change was simply
because R6RS consistently removed "is an error" semantics.
R7RS retains "is an error" in many places, and this is
much simpler and cleaner, so we should revisit this issue.

oldvalue

5

raw-time

1345967854198072

ticket

121

time

2012-08-26 14:57:34

Change at time 2012-08-26 14:55:04

author

alexshinn

field

comment

newvalue


    

oldvalue

4

raw-time

1345967704274992

ticket

121

time

2012-08-26 14:55:04

Change at time 2012-08-26 14:55:04

author

alexshinn

field

resolution

newvalue


    

oldvalue

fixed

raw-time

1345967704274992

ticket

121

time

2012-08-26 14:55:04

Change at time 2012-08-26 14:55:04

author

alexshinn

field

status

newvalue

reopened

oldvalue

closed

raw-time

1345967704274992

ticket

121

time

2012-08-26 14:55:04

Change at time 2012-08-26 14:54:57

author

alexshinn

field

comment

newvalue


    

oldvalue

3

raw-time

1345967697945431

ticket

121

time

2012-08-26 14:54:57

Change at time 2012-08-26 14:54:57

author

alexshinn

field

resolution

newvalue

fixed

oldvalue


    

raw-time

1345967697945431

ticket

121

time

2012-08-26 14:54:57

Change at time 2012-08-26 14:54:57

author

alexshinn

field

status

newvalue

closed

oldvalue

writing

raw-time

1345967697945431

ticket

121

time

2012-08-26 14:54:57

Change at time 2011-07-11 13:54:49

author

cowan

field

comment

newvalue


    

oldvalue

2

raw-time

1310367289000000

ticket

121

time

2011-07-11 13:54:49

Change at time 2011-07-11 13:54:49

author

cowan

field

owner

newvalue

cowan

oldvalue

alexshinn

raw-time

1310367289000000

ticket

121

time

2011-07-11 13:54:49

Change at time 2011-07-11 13:54:49

author

cowan

field

status

newvalue

writing

oldvalue

decided

raw-time

1310367289000000

ticket

121

time

2011-07-11 13:54:49

Change at time 2011-07-10 18:00:09

author

alexshinn

field

comment

newvalue

We voted to use the R6RS semantics.

oldvalue

1

raw-time

1310295609000000

ticket

121

time

2011-07-10 18:00:09

Change at time 2011-07-10 18:00:09

author

alexshinn

field

resolution

newvalue


    

oldvalue


    

raw-time

1310295609000000

ticket

121

time

2011-07-10 18:00:09

Change at time 2011-07-10 18:00:09

author

alexshinn

field

status

newvalue

decided

oldvalue

new

raw-time

1310295609000000

ticket

121

time

2011-07-10 18:00:09