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156 lines
4.4 KiB
Text
156 lines
4.4 KiB
Text
This file describes the implementation status and some notes; information is
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taken from the C99 standard (ISO/IEC 9899:1999), section 7 ("Library").
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# Notes for implementers
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7.1.2§6:
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Use (extern) in all function prototypes
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7.1.3§1:
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Only expose standard identifiers; anything else might be defined as a macro.
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Make sure every argument name, internal function name, etc. starts with
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either "__" or "_X" (where X is any uppercase letter)
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7.1.4§1:
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Always give a function even if there is a macro definition, so that the
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address of the function can be taken; don't rely on the macro being defined,
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as the user can remove it except in some special cases
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# Status
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In this file, every definition is classified in one of several implementation
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statuses. There are 5 stages that every definition should go through.
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TODO: Function/symbol/macro is not implemented/defined
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BDEPS(...): Function/symbol/macro needs ... to build
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LDEPS(...): Function/symbol/macro needs ... to link
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TEST: Function/symbol/macro needs to be tested
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DONE: Function/symbol/macro is defined, builds, links, and is tested
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7.2 <assert.h>
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! 7.2.1 assert: LDEPS(fprintf,stderr,abort)
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7.3 <complex.h> => OpenLibm
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7.4 <ctype.h>
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7.4.1 is*: DONE
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7.4.2 to*: DONE
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7.5 <errno.h>
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7.5.2 EDOM EILSEQ ERANGE: DONE
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7.6 <fenv.h> => OpenLibm
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7.7 <float.h> => GCC
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7.8 <inttypes.h>
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! 7.8.1 PRI* macros: LDEPS(*printf)
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! 7.8.1 SCN* macros: LDEPS(*scanf)
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7.8.2.1 imaxabs: DONE
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7.8.2.2 imaxdiv: DONE
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7.8.2.3 strtoimax strtoumax: DONE
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! 7.8.2.4 wcstoimax wcstoumax: TODO
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7.9 <iso646.h> => GCC
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7.10 <limits.h> => GCC
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7.11 <locale.h>
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! 7.11.1 setlocale: TEST
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! 7.11.2 localeconv: TEST
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7.12 <math.h> => OpenLibm
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7.13 <setjmp.h>
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! 7.13.1 setjmp: TEST
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! 7.13.2 longjmp: TEST
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7.14 <signal.h>
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! 7.14.1 Macros and stuff: TODO
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! 7.14.1.1 signal: TODO
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! 7.14.1.2 raise: TODO
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7.15 <stdarg.h> => GCC
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7.16 <stdbool.h> => GCC
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7.17 <stddef.h> => GCC
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7.18 <stdint.h> => GCC
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7.19 <stdio.h>
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! 7.19.1 Introduction: TODO
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! 7.19.4 Operations on files: TODO
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! 7.19.5 File access functions: TODO
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! 7.19.6 Formatted input/output functions: TODO
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! 7.19.7 Character input/output functions: TODO
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! 7.19.8 Direct input/output functions: TODO
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! 7.19.9 File positioning functions: TODO
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! 7.19.10 Error-handling functions: TODO
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7.20 <stdlib.h>
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! 7.20.1.1 atof: TODO
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7.20.1.2 atoi, atol, atoll: DONE
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! 7.20.1.3 strtod, strtof, strtold: TODO
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7.20.1.4 strtol, strtoul, strtoll, strtoull: DONE
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! 7.20.2 Pseudo-random sequence generation functions: TODO
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! 7.20.3 Memory management functions: TODO (check existing code first)
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! 7.20.4 Communication with the environment: TODO
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! 7.20.5 Searching and sorting utilities: TODO
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7.20.6.1 abs, labs, llabs: DONE
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7.20.6.2 div, ldiv, lldiv: DONE
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! 7.20.7 Multibyte/wide character conversion functions: TODO
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! 7.20.8 Multibyte/wide string conversion functions: TODO
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7.21 <string.h>
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7.21.2.1 memcpy: DONE
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7.21.2.2 memmove: DONE
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! 7.21.2.3 strcpy: TODO
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! 7.21.2.4 strncpy: TODO
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! 7.21.3.1 strcat: TODO
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! 7.21.3.2 strncat: TODO
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! 7.21.4.1 memcmp: TEST
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! 7.21.4.2 strcmp: TODO
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! 7.21.4.3 strcoll: TODO
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! 7.21.4.4 strncmp: TODO
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! 7.21.4.5 strxfrm: TODO
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! 7.21.5.1 memchr: TODO
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! 7.21.5.2 strchr: TODO
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! 7.21.5.3 strcspn: TODO
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! 7.21.5.4 strpbrk: TODO
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! 7.21.5.5 strrchr: TODO
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! 7.21.5.6 strspn: TODO
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! 7.21.5.7 strstr: TODO
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! 7.21.5.8 strtok: TODO
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7.21.6.1 memset: DONE
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! 7.21.6.2 strerror: TODO
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! 7.21.6.3 strlen: TODO
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7.22 <tgmath.h> => GCC
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7.23 <time.h>
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! 7.23.1 Components of time: TODO
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! 7.23.2.1 clock: TODO
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! 7.23.2.2 difftime: TODO
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! 7.23.2.3 mktime: TODO
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! 7.23.2.4 time: TODO
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! 7.23.3.1 asctime: TODO
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! 7.23.3.2 ctime: TODO
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! 7.23.3.3 gmtime: TODO
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! 7.23.3.4 localtime: TODO
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! 7.23.3.5 strftime: TODO
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7.24 <wchar.h>
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TODO (not a priority)
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7.25 <wctype.h>
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TODO (not a priority)
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# Supporting locales
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What if we wanted to support more locales?
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-> Need to a mechanism to supply the raw information, similar to the text files
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in /usr/share/i18n/locales
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-> Implement setlocale() and localeconv() properly (not hard)
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-> Probably support nl_langinfo(), which is much better than localeconv()
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-> Fix the "TODO: locale: ..." messages wherever assumptions on the locale are
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made in the code
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-> Properly implement strcoll() and strxfrm()
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