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 Liubov Dmitrieva for optimzed string and math functions on x86-64 and
62 Ulrich Drepper for his many contributions in almost all parts of
63 @theglibc{}, including:
65 @item internationalization support, including the @code{locale} and
66 @code{localedef} utilities.
67 @item Linux i386/ELF support
68 @item the @code{hsearch} and @code{drand48} families of functions,
69 reentrant @samp{@dots{}@code{_r}} versions of the @code{random}
70 family; System V shared memory and IPC support code
71 @item several highly-optimized string functions for i@var{x}86
73 @item many math functions
74 @item the character conversion functions (@code{iconv})
75 @item the @code{ftw} and @code{nftw} functions
76 @item the floating-point printing function used by @code{printf} and friends
77 and the floating-point reading function used by @code{scanf},
78 @code{strtod} and friends
79 @item the @code{catgets} support and the entire suite of multi-byte
80 and wide-character support functions (@file{wctype.h}, @file{wchar.h}, etc.).
81 @item versioning of objects on the symbol level
85 Paul Eggert for the @code{mktime} function and for his direction as
86 part of @theglibc{} steering committee.
89 Steve Ellcey for various fixes.
92 Tulio Magno Quites Machado Filho for adding a new class of installed
93 headers for low-level platform-specific functionality and one such for
97 Mike Frysinger for his maintaining of the IA64 architecture and for
98 testing and bug fixing.
101 Michael Glad for the DES encryption function @code{crypt} and related
105 Wolfram Gloger for contributing the memory allocation functions
106 functions @code{malloc}, @code{realloc} and @code{free} and related
110 Torbj@"orn Granlund for fast implementations of many of the string
111 functions (@code{memcpy}, @code{strlen}, etc.).
114 Michael J. Haertel for writing the merge sort function @code{qsort}
115 and malloc checking functions like @code{mcheck}.
118 Bruno Haible for his improvements to the @code{iconv} and locale
122 Richard Henderson for the port to Linux on Alpha
123 (@code{alpha-@var{anything}-linux}).
126 David Holsgrove for the port to Linux on MicroBlaze.
129 Daniel Jacobowitz for various fixes and enhancements.
132 Andreas Jaeger for the port to Linux on x86-64
133 (@code{x86_64-@var{anything}-linux} and his work on Linux for MIPS
134 (@code{mips-@var{anything}-linux}), implementing the @file{ldconfig}
135 program, providing a test suite for the math library and for his
136 direction as part of @theglibc{} steering committee.
139 Aurelien Jarno for various fixes.
142 Jakub Jelinek for implementing a number of checking functions and for
143 his direction as part of @theglibc{} steering committee.
146 Geoffrey Keating for the port to Linux on PowerPC
147 (@code{powerpc-@var{anything}-linux}).
150 Brendan Kehoe for contributing the port to the MIPS DECStation running
151 Ultrix 4 (@code{mips-dec-ultrix4}) and the port to the DEC Alpha
152 running OSF/1 (@code{alpha-dec-osf1}).
155 Mark Kettenis for implementing the @code{utmpx} interface and an utmp
156 daemon, and for a Hesiod NSS module.
159 Andi Kleen for implementing pthreads lock elision with TSX.
162 Kazumoto Kojima for the port of the Mach and Hurd code to the MIPS
163 architecture (@code{mips-@var{anything}-gnu}) and for his work on the
167 Andreas Krebbel for his work on Linux for s390 and s390x.
170 Thorsten Kukuk for providing an implementation for NIS (YP) and NIS+,
171 securelevel 0, 1 and 2 and for the implementation for a caching daemon
172 for NSS (@file{nscd}).
175 Jeff Law for various fixes.
178 Doug Lea for contributing the memory allocation functions
179 functions @code{malloc}, @code{realloc} and @code{free} and related
183 Chris Leonard for various fixes and enhancements to localedata.
186 Hongjiu Lu for providing the support for a Linux 32-bit runtime
187 environment under x86-64 (x32), for porting to Linux on IA64, for
188 improved string functions, a framework for testing IFUNC
189 implementations, and many bug fixes.
192 Luis Machado for optimized functions on PowerPC.
195 David J. MacKenzie for his contribution to the @code{getopt}
196 function and writing the @file{tar.h} header.
199 Greg McGary for adding runtime support for bounds checking.
202 Roland McGrath for writing most of @theglibc{} originally, for his
203 work on the Hurd port, his direction as part of @theglibc{} steering
204 committee and as FSF Project Steward for @theglibc{}, and for many bug
205 fixes and reviewing of contributions.
208 Allan McRae for various fixes.
211 Jason Merrill for the port to the Sequent Symmetry running Dynix
212 version 3 (@code{i386-sequent-bsd}).
215 Chris Metcalf for the port to Linux/Tile
216 (@code{tilegx-@var{anything}-linux} and
217 @code{tilepro-@var{anything}-linux}).
220 David Miller for contributing the port to Linux/Sparc
221 (@code{sparc*-@var{anything}-linux}).
224 Alan Modra for his improvements for Linux on PowerPC.
227 David Mosberger-Tang for contributing the port to Linux/Alpha
228 (@code{alpha-@var{anything}-linux}).
231 Stephen Moshier for implementing some 128-bit long double format math
235 Stephen Munroe for his port to Linux on PowerPC64
236 (@code{powerpc64-@var{anything}-linux}) and for adding optimized
237 implementations for PowerPC.
240 Joseph S. Myers for numerous bug fixes for the libm functions, for
241 his maintainership of the ARM and MIPS architectures, improving
242 cross-compilation and cross-testing of @theglibc{}, expanded
243 coverage of conformtest, merging the ports/ subdirectory
244 into the @glibcadj{} main repository and his direction as FSF Project
245 Steward for @theglibc{}.
248 Will Newton for contributing some optimized string functions and pointer
249 encryption support for ARM and various fixes.
252 Carlos O'Donell for his maintainership of the HPPA architecture, for
253 maintaining @theglibc{} web pages and wiki, for his direction as FSF
254 Project Steward for @theglibc{} and various bug fixes.
257 Alexandre Oliva for adding TLS descriptors for LD and GD on x86 and
258 x86-64, for the am33 port, for completing the MIPS n64/n32/o32 multilib
259 port, for thread-safety, async-signal safety and async-cancellation
260 safety documentation in the manual, for his direction as FSF Project
261 Maintainer and for various fixes.
264 Paul Pluzhnikov for various fixes.
267 Marek Polacek for various fixes.
270 Siddhesh Poyarekar for various fixes and an implementation of a
271 framework for performance benchmarking of functions.
274 Tom Quinn for contributing the startup code to support SunOS shared
275 libraries and the port to SGI machines running Irix 4
276 (@code{mips-sgi-irix4}).
279 Pravin Satpute for writing sorting rules for some Indian languages.
282 Douglas C. Schmidt for writing the quick sort function used as a
283 fallback by @code{qsort}.
286 Will Schmidt for optimized string functions on PowerPC.
289 Andreas Schwab for the port to Linux/m68k
290 (@code{m68k-@var{anything}-linux}) and for his direction as part of
291 @theglibc{} steering committee.
294 Martin Schwidefsky for porting to Linux on s390
295 (@code{s390-@var{anything}-linux}) and s390x
296 (@code{s390x-@var{anything}-linux}).
299 Thomas Schwinge for his contribution to Hurd and the SH architecture.
302 Carlos Eduardo Seo for optimized functions on PowerPC.
305 Marcus Shawcroft for contributing the AArch64 port.
308 Franz Sirl for various fixes.
311 Jes Sorensen for porting to Linux on IA64 (@code{ia64-@var{anything}-linux}).
314 Richard Stallman for his contribution to the @code{getopt} function.
317 Alfred M. Szmidt for various fixes.
320 Ian Lance Taylor for contributing the port to the MIPS DECStation
321 running Ultrix 4 (@code{mips-dec-ultrix4}).
324 Samuel Thibault for improving the Hurd port.
327 Tim Waugh for the implementation of the POSIX.2 @code{wordexp}
331 Eric Youngdale for implementing versioning of objects on the symbol level.
334 Adhemerval Zanella for optimized functions on PowerPC.
338 Some code in @theglibc{} comes from other projects and might be under
343 The timezone support code is derived from the public-domain timezone
344 package by Arthur David Olson and his many contributors.
347 Some of the support code for Mach is taken from Mach 3.0 by CMU;
348 the file if_ppp.h is also copyright by CMU, but under a different license;
349 see the file @file{LICENSES} for the text of the licenses.
352 The random number generation functions @code{random}, @code{srandom},
353 @code{setstate} and @code{initstate}, which are also the basis for the
354 @code{rand} and @code{srand} functions, were written by Earl T. Cohen
355 for the University of California at Berkeley and are copyrighted by the
356 Regents of the University of California. They have undergone minor
357 changes to fit into @theglibc{} and to fit the @w{ISO C} standard,
358 but the functional code is Berkeley's.@refill
361 The Internet-related code (most of the @file{inet} subdirectory) and
362 several other miscellaneous functions and header files have been
363 included from 4.4 BSD with little or no modification. The copying
364 permission notice for this code can be found in the file @file{LICENSES}
365 in the source distribution.
368 The @code{getaddrinfo} and @code{getnameinfo} functions and supporting
369 code were written by Craig Metz; see the file @file{LICENSES} for
370 details on their licensing.
373 The DNS resolver code is taken directly from BIND 4.9.5, which
374 includes copyrighted code from UC Berkeley and from Digital Equipment
375 Corporation. See the file @file{LICENSES} for the text of the DEC license.
378 The code to support Sun RPC is taken verbatim from Sun's
379 @w{@sc{rpcsrc-4.0}} distribution; see the file @file{LICENSES} for the
383 The math functions are taken from @code{fdlibm-5.1} by Sun
384 Microsystems, as modified by J.T. Conklin, Ian Lance Taylor,
385 Ulrich Drepper, Andreas Schwab, and Roland McGrath.
388 Many of the IEEE 64-bit double precision math functions
389 (in the @file{sysdeps/ieee754/dbl-64} subdirectory) come
390 from the IBM Accurate Mathematical Library, contributed by IBM.
393 Many of the IA64 math functions are taken from a collection of
394 ``Highly Optimized Mathematical Functions for Itanium'' that Intel
395 makes available under a free license; see the file @file{LICENSES} for