mirror of
https://github.com/QB64Official/qb64.git
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6e01fc8dce
Added new _STRCMP and _STRICMP commands for quick string comparisons. Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders. Altered UCASE and LCASE routines to be faster in some situations for us.
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/* Copyright (c) Robert Walker, support@tunesmithy.co.uk
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* Free source. Do what you wish with it - treat it as you would
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* example code in a book on c programming.
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*/
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/* Note
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* When you include this header then all your time_t variables will become
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* __int64 variables.
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*
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* Be sure to check that routines that use them work with __int64 variables.
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* By way of example, if you use sprintf, fprintf, sscanf, fscanf etc
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* then you won't be able to use the %d format field for these variables
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* in a 32 bit build - they will overflow and be used for the next format field
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* as well. Instead convert your variables to unsigned ints and use %lu
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*
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* e.g.
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* sprintf(sz,"time_saved %lu secs",(UINT)time(NULL));
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*
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* {
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* time_t time_saved=0;
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* UINT utime_saved=0;
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* sscanf( sz, "%*s%lu", &utime_saved);
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* // read it in as an unsigned long as sscanf can't read to __int64 variables
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* // directly
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* time_saved=utime_saved;
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* }
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*
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* Unsigned ints are fine for dates until beyond the end of this century
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*
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* If your compiler has some other type of native 64 bit type then
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* change the line typedef __int64 t64
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*/
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#include <time.h>
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/*
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* Note. I think the usual time functions aren't thread safe becuase they use
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* a single struct for localtime, gmtime and mktime. Several threads
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* might access that same structure simultaneously.
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*
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* However we can make this implementation thread safe using thread local
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* variables if we so wish - simply define the tm struct that they
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* return to be thread local. But - I'm not sure if the pointer you get
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* back from localtime can be kept for any length of time with thread
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* local variables. Can the address for it change?? Anyone know?
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*
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* You can't use this method with DLLs that might be loaded using LoadLibrary
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* - see
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* http://msdn.microsoft.com/library/en-us/dllproc/base/dynamic_link_library_data.asp
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*/
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// #define USE_THREAD_LOCAL_VARIABLES
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#undef time
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#undef localtime
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#undef mktime
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#undef difftime
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#undef gmtime
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#define time time_64
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#define localtime localtime_64
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#define mktime mktime_64
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#define difftime difftime_64
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#define gmtime gmtime_64
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typedef __int64 t64;
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#define time_t t64
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t64 time_64(t64 *pt);
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struct tm *localtime_64(t64 *pt);
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double difftime_64(t64 time1, t64 time0);
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t64 mktime64( struct tm *today );
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struct tm *gmtime_64(t64 t);
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/* allow multiple inclusion of this file - does no harm, and we want
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* the last one to be effective if included several times
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* as in
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* #include "time64.h"
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* ...
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* #include <time.h>
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* ...
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* #include "time64.h"
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*/
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