[ sisc-Bugs-1238375 ] srfi-19 date->julian-day fails if time zone offset is zero

Bugs item #1238375, was opened at 2005-07-14 11:08
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: John Russell (johnwrussell)
Assigned to: Nobody/Anonymous (nobody)
Summary: srfi-19 date->julian-day fails if time zone offset is zero

Initial Comment:
date->julian-day seems to succeed if the time zone
offset is, for example, -3600.  However, it fails with
a "division by zero" error if the time zone offset is 0.
 
Example session:

SISC (1.11.0-alpha) - main
#;> (require-library 'sisc/libs/srfi/srfi-19)
srfi-6
srfi-8
srfi-23
optional-args
srfi-19
#f
#;> (import srfi-19) 
#;> (date->julian-day (make-date 0 0 0 0 1 1 2004 -3600))
4906011/2
#;> (date->julian-day (make-date 0 0 0 0 1 1 2004 0))
Error in /: division by zero.
file:C:/sisc/sisc/src/sisc/modules/srfi/srfi-19/srfi-19.scm:756:11:
<from call to />
file:C:/sisc/sisc/src/sisc/modules/srfi/srfi-19/srfi-19.scm:756:11:
<from call to/argument of +>
file:C:/sisc/sisc/src/sisc/modules/srfi/srfi-19/srfi-19.scm:756:8:
<indeterminate call>

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