[vlc-devel] [RFC] signed versus unsigned integer types

Rafaël Carré funman at videolan.org
Tue Jan 29 15:13:48 CET 2008

Le Sun, 27 Jan 2008 10:07:58 +0100,
Jean-Paul Saman <jean-paul.saman at planet.nl> a écrit :

> I think it is good that someone looks into signed vs unsigned usage
> in vlc.

I've got a patch pending which use unsigned types in:

Before committing it, I will send you the exact description of what it
does, but first I need to solve a simple issue:

Why is mtime_t a signed type ?
What is a negative date ? (answer: nothing)

from vlc_common.h: typedef int64_t mtime_t;

from vlc_mtime.h:  #define LAST_MDATE ((mtime_t)((uint64_t)(-1)/2))
which could be changed to UINT64_MAX (0xffffffffffffffffULL)

I don't see any reason for a date to be signed, but it is used so much
in various demuxers, that maybe there is a reason I fail to see.


Rafaël Carré
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