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d9dc34cd 1@node Contributors, Free Manuals, Platform, Top
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2@c %MENU% Who wrote what parts of the GNU C Library
3@appendix Contributors to @theglibc{}
3c20b9b6 4
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5@Theglibc{} project would like to thank its many contributors.
6Without them the project would not have been nearly as successful as
7it has been. Any omissions in this list are accidental. Feel free to
8file a bug in bugzilla if you have been left out or some of your
9contributions are not listed. Please keep this list in alphabetical
10order.
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11
12@itemize @bullet
d8e272ab 13
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14@item
15Nick Alcock for contributing fixes to allow @theglibc{} to be built with the
16stack smashing protector enabled.
17
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18@item
19John David Anglin for various fixes to the hppa port.
20
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21@item
22Albert ARIBAUD for Y2038 related fixes.
23
3c20b9b6 24@item
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25Ryan S. Arnold for his improvements for Linux on PowerPC and his direction
26as FSF Project Steward for @theglibc{}.
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27
28@item
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29Miles Bader for writing the @code{argp} argument-parsing package, and the
30@code{argz}/@code{envz} interfaces.
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31
32@item
d8e272ab 33Jeff Bailey for his maintainership of the HPPA architecture.
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34
35@item
d8e272ab 36Petr Baudis for bug fixes and testing.
3c20b9b6 37
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38@item
39Anton Blanchard for various fixes.
40
3c20b9b6 41@item
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42Stephen R. van den Berg for contributing a highly-optimized
43@code{strstr} function.
3c20b9b6 44
db24e684 45@item
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46Ondrej Bilka for contributing optimized string routines for x64 and various
47fixes.
db24e684 48
3c20b9b6 49@item
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50Eric Blake for adding O(n) implementations of @code{memmem},
51@code{strstr} and @code{strcasestr}.
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52
53@item
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54Philip Blundell for the ports to Linux/ARM
55(@code{arm-@var{ANYTHING}-linuxaout}) and ARM standalone
56(@code{arm-@var{ANYTHING}-none}), as well as for parts of the IPv6
57support code.
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58
59@item
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60Per Bothner for the implementation of the @code{libio} library which
61is used to implement @code{stdio} functions.
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62
63@item
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64Mark Brown for his direction as part of @theglibc{} steering
65committee.
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66
67@item
d8e272ab 68Thomas Bushnell for his contributions to Hurd.
3c20b9b6 69
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70@item
71Rogerio Alves Cardoso for various fixes to PowerPC.
72
73@item
74Paul Clarke for optimized functions on PowerPC.
75
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76@item
77Palmer Dabbelt for contributing the port to Linux/RISC-V.
78
15192aaa 79@item
6cca855e 80DJ Delorie for maintenance of Linux/RISC-V, and various fixes.
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82@item
83Wilco Dijkstra for various fixes.
84
3c20b9b6 85@item
ef48b196 86Liubov Dmitrieva for optimized string and math functions on x86-64 and
06c5abbd 87x86.
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88
89@item
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90Ulrich Drepper for his many contributions in almost all parts of
91@theglibc{}, including:
92@itemize @bullet
136fa185 93@item writing most of the POSIX Threads Library originally.
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94@item internationalization support, including the @code{locale} and
95@code{localedef} utilities.
96@item Linux i386/ELF support
97@item the @code{hsearch} and @code{drand48} families of functions,
98reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
99family; System V shared memory and IPC support code
100@item several highly-optimized string functions for i@var{x}86
101processors
102@item many math functions
103@item the character conversion functions (@code{iconv})
104@item the @code{ftw} and @code{nftw} functions
105@item the floating-point printing function used by @code{printf} and friends
106and the floating-point reading function used by @code{scanf},
107@code{strtod} and friends
108@item the @code{catgets} support and the entire suite of multi-byte
109and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
110@item versioning of objects on the symbol level
111@end itemize
3c20b9b6 112
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113@item
114Richard Earnshaw for continued support and fixes to the various ARM
115machine files.
116
3c20b9b6 117@item
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118Paul Eggert for the @code{mktime} function and for his direction as
119part of @theglibc{} steering committee.
3c20b9b6 120
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121@item
122Steve Ellcey for various fixes.
123
15192aaa 124@item
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125Mike FABIAN for automating Unicode updates, for updating the locale data
126for ISO 14651, for updating the library Unicode support, and for various
127locale updates and fixes.
15192aaa 128
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129@item
130Tulio Magno Quites Machado Filho for adding a new class of installed
131headers for low-level platform-specific functionality and one such for
1900fab9 132PowerPC and various fixes.
06c5abbd 133
3c20b9b6 134@item
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135Mike Frysinger for his maintaining of the IA64 architecture and for
136testing and bug fixing.
3c20b9b6 137
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138@item
139Martin Galvan for contributing gdb pretty printer support to glibc and adding
140an initial set of pretty printers for structures in the POSIX Threads library.
141
3c20b9b6 142@item
841785ba 143Michael Glad for the passphrase-hashing function @code{crypt} and related
d8e272ab 144functions.
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145
146@item
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147Wolfram Gloger for contributing the memory allocation functions
148functions @code{malloc}, @code{realloc} and @code{free} and related
149code.
3c20b9b6 150
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151@item
152Gabriel F. T. Gomes for his improvements for Linux on PowerPC and for
153implementing the IEEE 128-bit floating point type for PowerPC.
154
3c20b9b6 155@item
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156Torbj@"orn Granlund for fast implementations of many of the string
157functions (@code{memcpy}, @code{strlen}, etc.).
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158
159@item
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160Michael J. Haertel for writing the merge sort function @code{qsort}
161and malloc checking functions like @code{mcheck}.
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162
163@item
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164Bruno Haible for his improvements to the @code{iconv} and locale
165implementations.
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166
167@item
d8e272ab 168Richard Henderson for the port to Linux on Alpha
c10c5267 169(@code{alpha-@var{anything}-linux}) and software floating-point support.
3c20b9b6 170
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171@item
172David Holsgrove for the port to Linux on MicroBlaze.
173
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174@item
175Leonhard Holz for various fixes.
176
3c20b9b6 177@item
d8e272ab 178Daniel Jacobowitz for various fixes and enhancements.
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179
180@item
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181Andreas Jaeger for the port to Linux on x86-64
182(@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
183(@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
184program, providing a test suite for the math library and for his
185direction as part of @theglibc{} steering committee.
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186
187@item
d8e272ab 188Aurelien Jarno for various fixes.
3c20b9b6 189
1900fab9 190@item
ef8659ea 191Rical Jasan for contributing various fixes in @theglibc{} manual.
1900fab9 192
3c20b9b6 193@item
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194Jakub Jelinek for implementing a number of checking functions,
195software floating-point support and for
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196his direction as part of @theglibc{} steering committee.
197
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198@item
199Simon Josefsson for the @code{libidn} add-on.
200
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201@item
202Geoffrey Keating for the port to Linux on PowerPC
203(@code{powerpc-@var{anything}-linux}).
204
205@item
206Brendan Kehoe for contributing the port to the MIPS DECStation running
207Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
208running OSF/1 (@code{alpha-dec-osf1}).
209
210@item
be208619 211Mark Kettenis for implementing the @code{utmpx} interface and a utmp
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212daemon, and for a Hesiod NSS module.
213
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214@item
215Andi Kleen for implementing pthreads lock elision with TSX.
216
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217@item
218Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
219architecture (@code{mips-@var{anything}-gnu}) and for his work on the
220SH architecture.
221
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222@item
223Maxim Kuvyrkov for various fixes.
224
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225@item
226Andreas Krebbel for his work on Linux for s390 and s390x.
227
228@item
229Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
230securelevel 0, 1 and 2 and for the implementation for a caching daemon
231for NSS (@file{nscd}).
232
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233@item
234Akhilesh Kumar for various fixes to locales.
235
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236@item
237Jeff Law for various fixes.
238
239@item
240Doug Lea for contributing the memory allocation functions
be208619 241@code{malloc}, @code{realloc} and @code{free} and related
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242code.
243
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244@item
245Chris Leonard for various fixes and enhancements to localedata.
246
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247@item
248Ilya Leoshkevich for various fixes.
249
250@item
251Dmitry V. Levin for various fixes.
252
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253@item
254Stefan Liebler for various fixes.
255
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256@item
257Hongjiu Lu for providing the support for a Linux 32-bit runtime
258environment under x86-64 (x32), for porting to Linux on IA64, for
bc38c906 259improved string functions, a framework for testing IFUNC
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260implementations, for implementing Intel Control-Flow Enforcement
261Technology, and many bug fixes.
d8e272ab 262
15192aaa 263@item
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264Rafal Luzynski for contributing support for two grammatical forms of month
265names, and for various fixes to locales.
15192aaa 266
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267@item
268Luis Machado for optimized functions on PowerPC.
269
270@item
271David J. MacKenzie for his contribution to the @code{getopt}
272function and writing the @file{tar.h} header.
273
274@item
275Greg McGary for adding runtime support for bounds checking.
276
277@item
278Roland McGrath for writing most of @theglibc{} originally, for his
279work on the Hurd port, his direction as part of @theglibc{} steering
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280committee and as FSF Project Steward for @theglibc{}, and for many bug
281fixes and reviewing of contributions.
d8e272ab 282
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283@item
284Allan McRae for various fixes.
285
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286@item
287Jason Merrill for the port to the Sequent Symmetry running Dynix
288version 3 (@code{i386-sequent-bsd}).
289
290@item
291Chris Metcalf for the port to Linux/Tile
292(@code{tilegx-@var{anything}-linux} and
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293@code{tilepro-@var{anything}-linux}) and support for the generic Linux
294kernel syscall interface used by several newer ports.
d8e272ab 295
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296@item
297Jim Meyering for various fixes.
298
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299@item
300David Miller for contributing the port to Linux/Sparc
301(@code{sparc*-@var{anything}-linux}).
302
303@item
304Alan Modra for his improvements for Linux on PowerPC.
305
306@item
307David Mosberger-Tang for contributing the port to Linux/Alpha
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308(@code{alpha-@var{anything}-linux}).
309
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310@item
311Wainer dos Santos Moschetta for various fixes to powerpc.
312
3c20b9b6 313@item
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314Stephen Moshier for implementing some 128-bit long double format math
315functions.
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316
317@item
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318Stephen Munroe for his port to Linux on PowerPC64
319(@code{powerpc64-@var{anything}-linux}) and for adding optimized
320implementations for PowerPC.
3c20b9b6 321
1900fab9 322@item
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323Paul E. Murphy for various fixes on PowerPC and for implementing the IEEE
324128-bit floating point type for PowerPC.
1900fab9 325
3c20b9b6 326@item
bc38c906 327Joseph S. Myers for numerous bug fixes for the libm functions, for
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328his maintainership of the ARM and MIPS architectures and the math
329component, improving cross-compilation and cross-testing of
330@theglibc{}, expanded coverage of conformtest, merging the ports/
331subdirectory into the @glibcadj{} main repository and his direction as
332FSF Project Steward for @theglibc{}.
3c20b9b6 333
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334@item
335Marko Myllynen for various fixes.
336
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337@item
338Szabolcs Nagy for various fixes.
339
db24e684 340@item
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341Will Newton for contributing some optimized string functions and pointer
342encryption support for ARM and various fixes.
db24e684 343
3c20b9b6 344@item
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345Carlos O'Donell for his maintainership of the HPPA architecture, for
346maintaining @theglibc{} web pages and wiki, for his direction as FSF
347Project Steward for @theglibc{} and various bug fixes.
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348
349@item
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350Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
351x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
68159946 352port, for thread-safety, async-signal safety and async-cancellation
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353safety documentation in the manual, for his direction as FSF Project
354Maintainer and for various fixes.
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355
356@item
d8e272ab 357Paul Pluzhnikov for various fixes.
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358
359@item
d8e272ab 360Marek Polacek for various fixes.
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361
362@item
1900fab9 363Siddhesh Poyarekar for various fixes, an implementation of a framework for
43ce02c6 364performance benchmarking of functions and implementing the tunables
1900fab9 365infrastructure.
3c20b9b6 366
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367@item
368Tom Quinn for contributing the startup code to support SunOS shared
369libraries and the port to SGI machines running Irix 4
370(@code{mips-sgi-irix4}).
371
04cb913d 372@item
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373Torvald Riegel for the implementation of new algorithms for semaphores,
374pthread_rwlock and condition variables.
375
376@item
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377Maciej W. Rozycki for MIPS fixes, support for ABSOLUTE symbols,
378and various fixes.
04cb913d 379
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380@item
381Leonardo Sandoval for various fixes.
382
3c20b9b6 383@item
d8e272ab 384Pravin Satpute for writing sorting rules for some Indian languages.
3c20b9b6 385
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386@item
387Douglas C. Schmidt for writing the quick sort function used as a
388fallback by @code{qsort}.
389
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390@item
391Will Schmidt for optimized string functions on PowerPC.
392
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393@item
394Andreas Schwab for the port to Linux/m68k
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395(@code{m68k-@var{anything}-linux}), for his direction as part of
396@theglibc{} steering committee, and for various bug fixes.
4648c381 397
3c20b9b6 398@item
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399Martin Schwidefsky for porting to Linux on s390
400(@code{s390-@var{anything}-linux}) and s390x
401(@code{s390x-@var{anything}-linux}).
3c20b9b6 402
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403@item
404Thomas Schwinge for his contribution to Hurd and the SH architecture.
405
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406@item
407Martin Sebor for various fixes.
408
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409@item
410Andrew Senkevich for contributing vector math function implementations for x86.
411
3c20b9b6 412@item
d8e272ab 413Carlos Eduardo Seo for optimized functions on PowerPC.
3c20b9b6 414
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415@item
416Arjun Shankar for testing and bug fixing.
417
bc38c906 418@item
cedb2a90 419Marcus Shawcroft for contributing the AArch64 port.
bc38c906 420
3c20b9b6 421@item
d8e272ab 422Franz Sirl for various fixes.
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423
424@item
d8e272ab 425Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
3c20b9b6 426
1900fab9 427@item
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428Rajalakshmi Srinivasaraghavan for various fixes and optimizations on PowerPC
429and for implementing the IEEE 128-bit floating point type for PowerPC.
1900fab9 430
3c20b9b6 431@item
d8e272ab 432Richard Stallman for his contribution to the @code{getopt} function.
3c20b9b6 433
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434@item
435Alfred M. Szmidt for various fixes.
436
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437@item
438Chung-Lin Tang for contributing the Nios II port.
439
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440@item
441Ian Lance Taylor for contributing the port to the MIPS DECStation
442running Ultrix 4 (@code{mips-dec-ultrix4}).
443
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444@item
445Samuel Thibault for improving the Hurd port.
446
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447@item
448Pino Toscano for various fixes.
449
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450@item
451Matt Turner for various fixes to the Alpha port.
452
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453@item
454Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
455function family.
456
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457@item
458Ulrich Weigand for various fixes to the PowerPC64 and Arm ports.
459
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460@item
461Florian Weimer for his maintainership of the network component, for handling
462of security issues, and for various fixes.
463
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464@item
465Zack Weinberg for the @code{explicit_bzero} implementation and for various
466fixes.
467
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468@item
469Mark Wielaard for various fixes.
470
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471@item
472Eric Youngdale for implementing versioning of objects on the symbol level.
473
474@item
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475Adhemerval Zanella for optimized functions on PowerPC, ISO C threads support
476and various fixes.
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477
478@end itemize
479
480Some code in @theglibc{} comes from other projects and might be under
481a different license:
482
483@itemize @bullet
484@item
485The timezone support code is derived from the public-domain timezone
486package by Arthur David Olson and his many contributors.
487
488@item
489Some of the support code for Mach is taken from Mach 3.0 by CMU;
be208619 490the file @file{if_ppp.h} is also copyright by CMU, but under a different license;
d8e272ab 491see the file @file{LICENSES} for the text of the licenses.
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492
493@item
494The random number generation functions @code{random}, @code{srandom},
495@code{setstate} and @code{initstate}, which are also the basis for the
496@code{rand} and @code{srand} functions, were written by Earl T. Cohen
497for the University of California at Berkeley and are copyrighted by the
498Regents of the University of California. They have undergone minor
1f77f049 499changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
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500but the functional code is Berkeley's.@refill
501
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502@item
503The Internet-related code (most of the @file{inet} subdirectory) and
504several other miscellaneous functions and header files have been
505included from 4.4 BSD with little or no modification. The copying
506permission notice for this code can be found in the file @file{LICENSES}
507in the source distribution.
508
509@item
510The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
511code were written by Craig Metz; see the file @file{LICENSES} for
512details on their licensing.
513
3c20b9b6 514@item
c10c5267 515The DNS resolver code is taken directly from BIND 8.2.3-T5B, which
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516includes copyrighted code from UC Berkeley and from Digital Equipment
517Corporation. See the file @file{LICENSES} for the text of the DEC license.
518
519@item
520The code to support Sun RPC is taken verbatim from Sun's
521@w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
522text of the license.
3c20b9b6 523
c6c6dd48 524@item
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525The math functions are taken from @code{fdlibm-5.1} by Sun
526Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
527Ulrich Drepper, Andreas Schwab, and Roland McGrath.
528
529@item
530Many of the IEEE 64-bit double precision math functions
531(in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
532from the IBM Accurate Mathematical Library, contributed by IBM.
3c20b9b6 533
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534@item
535Many of the IA64 math functions are taken from a collection of
536``Highly Optimized Mathematical Functions for Itanium'' that Intel
537makes available under a free license; see the file @file{LICENSES} for
538details.
3c20b9b6 539
3c20b9b6 540@end itemize