Brad Smith 041f981960

rand() use XOR to break up unwanted pair correlation (#1107) ...

* rand() use XOR to break up unwanted pair correlation

This form of rand() cannot return the same value twice in a row.
Two additonal EOR instructions produce a more even distribution of successive pairs.
see comments on #951

* rand.s document purpose of XOR

* suggested srand() optimization: zero fill unnecessary

* test to validate implementation of rand()

* srand() improving behaviour and adding startup test

* srand() with a tail call to rand() for better initial shuffle

* srand() can fall through to rand() instead of tail call

2020-07-21 23:38:18 +02:00

..

_afailed.c

Removed additional exit constants definitions from cc65.h to stdlih.h. Guarded the definitions by #ifdef. Removed cc65.h includes from abort and assert implementations.

2019-11-19 14:08:00 +01:00

_cwd.s

Renamed INITBSS to INIT and INIT to ONCE.

2016-03-06 21:27:19 +01:00

_directerrno.s

Moved two errno helper functions into separate files.

2015-09-25 14:06:58 -04:00

_environ.s

Adjusted constructors.

2016-03-16 16:28:32 +01:00

_fdesc.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_file.h

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

_file.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_fopen.s

Don't pass mode argument to open() from _fopen().

2018-08-17 23:28:45 +02:00

_heap.s

Renamed INITBSS to INIT and INIT to ONCE.

2016-03-06 21:27:19 +01:00

_heapadd.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_heapblocksize.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_heapmaxavail.s

Have _heapmaxavail() work as advertised.

2014-02-20 21:04:11 +01:00

_heapmemavail.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_hextab.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

_idiv32by16r16.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

_imul8x8r16.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

_imul16x16r32.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

_longminstr.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

_mappederrno.s

Moved two errno helper functions into separate files.

2015-09-25 14:06:58 -04:00

_oserror.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_poserror.c

Fixed comments. No code change.

2011-04-25 18:49:24 +00:00

_printf.h

Added explicit settings of calling conventions in pointer-to-function declarations in system and library headers.

2015-06-22 00:15:48 -04:00

_printf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_scanf.c

Changed literal zeroes of the style "#>0" into the style "#>$0000".

2014-09-10 19:15:07 -04:00

_scanf.h

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

_scanf.inc

Replace vfscanf by an assembler version

2004-11-27 14:56:54 +00:00

_seterrno.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_swap.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

_sys.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

_udiv32by16r16.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

_umul8x8r16.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

_umul16x8r32.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

_umul16x16r32.s

Avoid unintended file "shadowing".

2019-04-04 09:16:59 +02:00

abort.c

Removed additional exit constants definitions from cc65.h to stdlih.h. Guarded the definitions by #ifdef. Removed cc65.h includes from abort and assert implementations.

2019-11-19 14:08:00 +01:00

asctime.c

Call strftime instead of formatting the time manually

2002-11-13 13:28:45 +00:00

atexit.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

atoi.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

bsearch.c

Added explicit settings of calling conventions in pointer-to-function declarations in system and library headers.

2015-06-22 00:15:48 -04:00

calloc.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

chdir.s

Renamed oserrcheck to __mappederrno. Added an additional function named

2010-06-10 18:10:53 +00:00

copydata.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

creat.s

Added creat()

2003-06-12 09:10:50 +00:00

ctime.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

ctype.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

ctypemask.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

divt.s

Saved 2 bytes and fixed error in case of negative result.

2018-11-09 17:27:35 -05:00

doesclrscr.s

Use 'return0' for default 'doesclrscrafterexit()' implementation in libsrc/common.

2016-06-07 15:05:00 +02:00

errno.s

Moved two errno helper functions into separate files.

2015-09-25 14:06:58 -04:00

errormsg.c

Implement exec() for Atari XDOS.

2016-06-13 20:40:01 +02:00

fclose.s

Use a subroutine to set errno to save some space.

2004-05-13 21:09:08 +00:00

fdopen.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fgetc.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fgetpos.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fgets.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fmisc.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

fopen.s

Use a subroutine to set errno to save some space.

2004-05-13 21:09:08 +00:00

fprintf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

fputc.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fputs.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fread.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

free.s

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

freopen.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fscanf.s

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fseek.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fsetpos.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

ftell.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

fwrite.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

getchar.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

getcpu.s

remove TABs

2019-02-05 23:27:52 +01:00

getcwd.s

Fixed comments.

2018-05-21 14:41:12 +02:00

getenv.s

Added environment routines

2005-04-21 21:26:15 +00:00

getopt.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

gets.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

gmtime.c

"Inverted" time_t value handling.

2018-08-02 17:12:12 +02:00

interrupt.s

Save/restore jmpvec as it is used by generated code - see g_callind().

2017-10-23 18:57:28 +02:00

isalnum.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isalpha.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isascii.s

Changes resulting from 2nd code review

2020-02-03 20:45:09 +01:00

isblank.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

iscntrl.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isdigit.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isgraph.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

islower.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isprint.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

ispunct.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isspace.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isupper.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

isxdigit.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

itoa.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

labs.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

locale.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

localtime.c

"Inverted" time_t value handling.

2018-08-02 17:12:12 +02:00

longjmp.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

ltoa.s

Further optimizations in common/conio.

2018-05-22 16:00:05 +02:00

lz4.s

Small lz4 optimizations

2017-06-09 16:57:47 +03:00

malloc.s

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

memchr.s

Fixed formatting and two import issues.

2018-05-21 13:02:56 +02:00

memcmp.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

memcpy.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

memmove.s

Added further optimizations and unit tests.

2017-03-05 02:09:12 +01:00

memset.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

mkdir.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

mktime.c

"Inverted" time_t value handling.

2018-08-02 17:12:12 +02:00

modfree.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

modload.s

Use the new declarations from the zeropage include file. In interrupt handlers

2012-11-04 15:23:05 +00:00

mul20.s

Changes resulting from 2nd code review

2020-02-03 20:45:09 +01:00

mul40.s

Changes resulting from 2nd code review

2020-02-03 20:45:09 +01:00

perror.c

Use _errno, not errno.

2010-06-03 21:31:06 +00:00

pmemalign.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

printf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

putchar.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

putenv.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

puts.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

qsort.c

Added explicit settings of calling conventions in pointer-to-function declarations in system and library headers.

2015-06-22 00:15:48 -04:00

raise.s

Reset signal handler to SIG_DFL on a call to raise()

2003-03-14 00:08:35 +00:00

rand.s

rand() use XOR to break up unwanted pair correlation (#1107)

2020-07-21 23:38:18 +02:00

realloc.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

remove.s

Renamed oserrcheck to __mappederrno. Added an additional function named

2010-06-10 18:10:53 +00:00

rename.s

Renamed oserrcheck to __mappederrno. Added an additional function named

2010-06-10 18:10:53 +00:00

rewind.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

rmdir.s

Renamed oserrcheck to __mappederrno. Added an additional function named

2010-06-10 18:10:53 +00:00

scanf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

searchenv.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

setjmp.s

Improved longjmp() and setjmp().

2015-09-11 14:18:22 -04:00

signal.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

sigtable.s

Add signal() and raise()

2003-03-14 00:02:58 +00:00

sincos.s

Added '_' prefix to sin and cos.

2019-04-13 11:25:54 +02:00

sleep.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

snprintf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

sprintf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

sscanf.s

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

strcat.s

Just some white space fixes of recently contributed code.

2017-04-06 17:53:57 +02:00

strchr.s

Just some white space fixes of recently contributed code.

2017-04-06 17:53:57 +02:00

strcmp.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

strcoll.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strcpy.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strcspn.s

Further optimizations in common/conio.

2018-05-22 16:00:05 +02:00

strdup.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strerror.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strftime.c

Make some arrays const.

2017-06-28 20:43:31 +02:00

stricmp.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

strlen.s

Further optimizations in common/conio.

2018-05-22 16:00:05 +02:00

strlower.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

strncat.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

strncmp.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

strncpy.s

Fixed formatting and two import issues.

2018-05-21 13:02:56 +02:00

strnicmp.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

stroserr.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strpbrk.s

Fixed strpbrk().

2018-05-29 14:29:50 -04:00

strqtok.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

strrchr.s

Added "strrchr" optimizaion a matching unit test and tiny unit test framework. (Documentation for that will follow later)

2017-02-26 20:03:05 +01:00

strspn.s

Further optimizations in common/conio.

2018-05-22 16:00:05 +02:00

strstr.s

Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00

strtoimax.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strtok.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

strtol.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

strtoul.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

strtoumax.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

strupper.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

strxfrm.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

system.c

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

tgi_colors.s

Moved most of the tgi_colors.s files into the libsrc/common/ directory.

2018-03-27 07:28:46 -04:00

time.s

Optimize for size.

2018-08-19 14:35:30 +02:00

timezone.c

Cosmetic changes

2002-11-13 08:56:45 +00:00

toascii.s

Replaced three (logically) identical files with a single file.

2017-10-23 18:35:06 +02:00

tolower.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

toupper.s

Shortened names and adjusted style.

2020-04-02 22:58:16 +02:00

uname.s

Renamed oserrcheck to __mappederrno. Added an additional function named

2010-06-10 18:10:53 +00:00

ungetc.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

unlink.s

Added unlink()

2003-06-12 08:43:57 +00:00

utscopy.s

Use structs

2003-12-03 20:23:09 +00:00

vfprintf.s

Added explicit settings of calling conventions in pointer-to-function declarations in system and library headers.

2015-06-22 00:15:48 -04:00

vfscanf.s

Changed multi-line C comments into another style.

2014-06-30 16:51:07 -04:00

vprintf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

vscanf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

vsnprintf.s

Fixed a hardware-stack leak.

2015-07-17 20:36:56 -04:00

vsprintf.s

Removed (pretty inconsistently used) tab chars from source code base.

2013-05-09 13:57:12 +02:00

vsscanf.s

Changed literal zeroes of the style "#>0" into the style "#>$0000".

2014-09-10 19:15:07 -04:00

zerobss.s

Changed run location of INIT segment.

2015-10-14 22:52:09 +02:00