bugAVR C Runtime Library - Bugs: bug #44520, time.h mentions a "best...


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bug #44520: time.h mentions a "best effort representation" but does not explain it

Submitter:  Gregor Riepl <onitake>
Submitted:  Thu 12 Mar 2015 03:20:48 PM UTC
Category:  Documentation Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Header files
Status:  None Percent Complete:  0%
Assigned to:  None Open/Closed:  Open
Release:  * Unknown Fixed Release:  None
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Thu 12 Mar 2015 03:20:48 PM UTC, original submission:  

This bug report applies to avr-libc 1.8.1.

The documentation for time.h mentions the following:

  Section mktime() The standard specifies that mktime() should return (time_t) -1, if the time cannot be represented. This implementation always returns a 'best effort' representation.

Please explain what "best effort" means in this context, and also add relevant information to the documentation of mktime and gm_mktime.

I assume these two functions clamp the value of the returned time_t to [0,UINT32_MAX], but is that the only limitation?

Gregor Riepl <onitake>


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