1 @node Contributors, Free Manuals, Platform, Top
2 @c %MENU% Who wrote what parts of the GNU C Library
3 @appendix Contributors to @theglibc{}
5 @Theglibc{} project would like to thank its many contributors.
6 Without them the project would not have been nearly as successful as
7 it has been. Any omissions in this list are accidental. Feel free to
8 file a bug in bugzilla if you have been left out or some of your
9 contributions are not listed. Please keep this list in alphabetical
15 Ryan S. Arnold for his improvements for Linux on PowerPC and his direction
16 as FSF Project Steward for @theglibc{}.
19 Miles Bader for writing the @code{argp} argument-parsing package, and the
20 @code{argz}/@code{envz} interfaces.
23 Jeff Bailey for his maintainership of the HPPA architecture.
26 Petr Baudis for bug fixes and testing.
29 Stephen R. van den Berg for contributing a highly-optimized
30 @code{strstr} function.
33 Ondrej Bilka for contributing optimized string routines for x64 and various
37 Eric Blake for adding O(n) implementations of @code{memmem},
38 @code{strstr} and @code{strcasestr}.
41 Philip Blundell for the ports to Linux/ARM
42 (@code{arm-@var{ANYTHING}-linuxaout}) and ARM standalone
43 (@code{arm-@var{ANYTHING}-none}), as well as for parts of the IPv6
47 Per Bothner for the implementation of the @code{libio} library which
48 is used to implement @code{stdio} functions.
51 Mark Brown for his direction as part of @theglibc{} steering
55 Thomas Bushnell for his contributions to Hurd.
58 Wilco Dijkstra for various fixes.
61 Liubov Dmitrieva for optimzed string and math functions on x86-64 and
65 Ulrich Drepper for his many contributions in almost all parts of
66 @theglibc{}, including:
68 @item internationalization support, including the @code{locale} and
69 @code{localedef} utilities.
70 @item Linux i386/ELF support
71 @item the @code{hsearch} and @code{drand48} families of functions,
72 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
73 family; System V shared memory and IPC support code
74 @item several highly-optimized string functions for i@var{x}86
76 @item many math functions
77 @item the character conversion functions (@code{iconv})
78 @item the @code{ftw} and @code{nftw} functions
79 @item the floating-point printing function used by @code{printf} and friends
80 and the floating-point reading function used by @code{scanf},
81 @code{strtod} and friends
82 @item the @code{catgets} support and the entire suite of multi-byte
83 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
84 @item versioning of objects on the symbol level
88 Richard Earnshaw for continued support and fixes to the various ARM
92 Paul Eggert for the @code{mktime} function and for his direction as
93 part of @theglibc{} steering committee.
96 Steve Ellcey for various fixes.
99 Tulio Magno Quites Machado Filho for adding a new class of installed
100 headers for low-level platform-specific functionality and one such for
104 Mike Frysinger for his maintaining of the IA64 architecture and for
105 testing and bug fixing.
108 Michael Glad for the DES encryption function @code{crypt} and related
112 Wolfram Gloger for contributing the memory allocation functions
113 functions @code{malloc}, @code{realloc} and @code{free} and related
117 Torbj@"orn Granlund for fast implementations of many of the string
118 functions (@code{memcpy}, @code{strlen}, etc.).
121 Michael J. Haertel for writing the merge sort function @code{qsort}
122 and malloc checking functions like @code{mcheck}.
125 Bruno Haible for his improvements to the @code{iconv} and locale
129 Richard Henderson for the port to Linux on Alpha
130 (@code{alpha-@var{anything}-linux}).
133 David Holsgrove for the port to Linux on MicroBlaze.
136 Daniel Jacobowitz for various fixes and enhancements.
139 Andreas Jaeger for the port to Linux on x86-64
140 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
141 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
142 program, providing a test suite for the math library and for his
143 direction as part of @theglibc{} steering committee.
146 Aurelien Jarno for various fixes.
149 Jakub Jelinek for implementing a number of checking functions and for
150 his direction as part of @theglibc{} steering committee.
153 Geoffrey Keating for the port to Linux on PowerPC
154 (@code{powerpc-@var{anything}-linux}).
157 Brendan Kehoe for contributing the port to the MIPS DECStation running
158 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
159 running OSF/1 (@code{alpha-dec-osf1}).
162 Mark Kettenis for implementing the @code{utmpx} interface and an utmp
163 daemon, and for a Hesiod NSS module.
166 Andi Kleen for implementing pthreads lock elision with TSX.
169 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
170 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
174 Andreas Krebbel for his work on Linux for s390 and s390x.
177 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
178 securelevel 0, 1 and 2 and for the implementation for a caching daemon
179 for NSS (@file{nscd}).
182 Jeff Law for various fixes.
185 Doug Lea for contributing the memory allocation functions
186 functions @code{malloc}, @code{realloc} and @code{free} and related
190 Chris Leonard for various fixes and enhancements to localedata.
193 Stefan Liebler for various fixes.
196 Hongjiu Lu for providing the support for a Linux 32-bit runtime
197 environment under x86-64 (x32), for porting to Linux on IA64, for
198 improved string functions, a framework for testing IFUNC
199 implementations, and many bug fixes.
202 Luis Machado for optimized functions on PowerPC.
205 David J. MacKenzie for his contribution to the @code{getopt}
206 function and writing the @file{tar.h} header.
209 Greg McGary for adding runtime support for bounds checking.
212 Roland McGrath for writing most of @theglibc{} originally, for his
213 work on the Hurd port, his direction as part of @theglibc{} steering
214 committee and as FSF Project Steward for @theglibc{}, and for many bug
215 fixes and reviewing of contributions.
218 Allan McRae for various fixes.
221 Jason Merrill for the port to the Sequent Symmetry running Dynix
222 version 3 (@code{i386-sequent-bsd}).
225 Chris Metcalf for the port to Linux/Tile
226 (@code{tilegx-@var{anything}-linux} and
227 @code{tilepro-@var{anything}-linux}).
230 David Miller for contributing the port to Linux/Sparc
231 (@code{sparc*-@var{anything}-linux}).
234 Alan Modra for his improvements for Linux on PowerPC.
237 David Mosberger-Tang for contributing the port to Linux/Alpha
238 (@code{alpha-@var{anything}-linux}).
241 Stephen Moshier for implementing some 128-bit long double format math
245 Stephen Munroe for his port to Linux on PowerPC64
246 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
247 implementations for PowerPC.
250 Joseph S. Myers for numerous bug fixes for the libm functions, for
251 his maintainership of the ARM and MIPS architectures, improving
252 cross-compilation and cross-testing of @theglibc{}, expanded
253 coverage of conformtest, merging the ports/ subdirectory
254 into the @glibcadj{} main repository and his direction as FSF Project
255 Steward for @theglibc{}.
258 Will Newton for contributing some optimized string functions and pointer
259 encryption support for ARM and various fixes.
262 Carlos O'Donell for his maintainership of the HPPA architecture, for
263 maintaining @theglibc{} web pages and wiki, for his direction as FSF
264 Project Steward for @theglibc{} and various bug fixes.
267 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
268 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
269 port, for thread-safety, async-signal safety and async-cancellation
270 safety documentation in the manual, for his direction as FSF Project
271 Maintainer and for various fixes.
274 Paul Pluzhnikov for various fixes.
277 Marek Polacek for various fixes.
280 Siddhesh Poyarekar for various fixes and an implementation of a
281 framework for performance benchmarking of functions.
284 Tom Quinn for contributing the startup code to support SunOS shared
285 libraries and the port to SGI machines running Irix 4
286 (@code{mips-sgi-irix4}).
289 Torvald Riegel for the implementation of a new semaphore algorithm.
292 Pravin Satpute for writing sorting rules for some Indian languages.
295 Douglas C. Schmidt for writing the quick sort function used as a
296 fallback by @code{qsort}.
299 Will Schmidt for optimized string functions on PowerPC.
302 Andreas Schwab for the port to Linux/m68k
303 (@code{m68k-@var{anything}-linux}) and for his direction as part of
304 @theglibc{} steering committee.
307 Martin Schwidefsky for porting to Linux on s390
308 (@code{s390-@var{anything}-linux}) and s390x
309 (@code{s390x-@var{anything}-linux}).
312 Thomas Schwinge for his contribution to Hurd and the SH architecture.
315 Carlos Eduardo Seo for optimized functions on PowerPC.
318 Marcus Shawcroft for contributing the AArch64 port.
321 Franz Sirl for various fixes.
324 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
327 Richard Stallman for his contribution to the @code{getopt} function.
330 Alfred M. Szmidt for various fixes.
333 Ian Lance Taylor for contributing the port to the MIPS DECStation
334 running Ultrix 4 (@code{mips-dec-ultrix4}).
337 Samuel Thibault for improving the Hurd port.
340 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
344 Eric Youngdale for implementing versioning of objects on the symbol level.
347 Adhemerval Zanella for optimized functions on PowerPC.
351 Some code in @theglibc{} comes from other projects and might be under
356 The timezone support code is derived from the public-domain timezone
357 package by Arthur David Olson and his many contributors.
360 Some of the support code for Mach is taken from Mach 3.0 by CMU;
361 the file if_ppp.h is also copyright by CMU, but under a different license;
362 see the file @file{LICENSES} for the text of the licenses.
365 The random number generation functions @code{random}, @code{srandom},
366 @code{setstate} and @code{initstate}, which are also the basis for the
367 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
368 for the University of California at Berkeley and are copyrighted by the
369 Regents of the University of California. They have undergone minor
370 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
371 but the functional code is Berkeley's.@refill
374 The Internet-related code (most of the @file{inet} subdirectory) and
375 several other miscellaneous functions and header files have been
376 included from 4.4 BSD with little or no modification. The copying
377 permission notice for this code can be found in the file @file{LICENSES}
378 in the source distribution.
381 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
382 code were written by Craig Metz; see the file @file{LICENSES} for
383 details on their licensing.
386 The DNS resolver code is taken directly from BIND 4.9.5, which
387 includes copyrighted code from UC Berkeley and from Digital Equipment
388 Corporation. See the file @file{LICENSES} for the text of the DEC license.
391 The code to support Sun RPC is taken verbatim from Sun's
392 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
396 The math functions are taken from @code{fdlibm-5.1} by Sun
397 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
398 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
401 Many of the IEEE 64-bit double precision math functions
402 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
403 from the IBM Accurate Mathematical Library, contributed by IBM.
406 Many of the IA64 math functions are taken from a collection of
407 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
408 makes available under a free license; see the file @file{LICENSES} for