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| <!-- %MENU% Who wrote what parts of the GNU C library --> |
| <h2 class="appendix">Appendix E Contributors to the GNU C Library</h2> |
| |
| <p>The GNU C library was written originally by Roland McGrath, and is |
| currently maintained by Ulrich Drepper. Some parts of the library were |
| contributed or worked on by other people. |
| |
| <ul> |
| <li>The <code>getopt</code> function and related code was written by |
| Richard Stallman, David J.<!-- /@w --> MacKenzie, and Roland McGrath<!-- /@w -->. |
| |
| <li>The merge sort function <code>qsort</code> was written by Michael J. Haertel. |
| |
| <li>The quick sort function used as a fallback by <code>qsort</code> was written |
| by Douglas C. Schmidt. |
| |
| <li>The memory allocation functions <code>malloc</code>, <code>realloc</code> and |
| <code>free</code> and related code were written by Michael J. Haertel, |
| Wolfram Gloger<!-- /@w -->, and Doug Lea<!-- /@w -->. |
| |
| <li>Fast implementations of many of the string functions (<code>memcpy</code>, |
| <code>strlen</code>, etc.) were written by Torbjörn Granlund. |
| |
| <li>The <samp><span class="file">tar.h</span></samp> header file was written by David J. MacKenzie. |
| |
| <li>The port to the MIPS DECStation running Ultrix 4 |
| (<code>mips-dec-ultrix4</code>) |
| was contributed by Brendan Kehoe and Ian Lance Taylor. |
| |
| <li>The DES encryption function <code>crypt</code> and related functions were |
| contributed by Michael Glad. |
| |
| <li>The <code>ftw</code> and <code>nftw</code> functions were contributed by Ulrich Drepper. |
| |
| <li>The startup code to support SunOS shared libraries was contributed by |
| Tom Quinn. |
| |
| <li>The <code>mktime</code> function was contributed by Paul Eggert. |
| |
| <li>The port to the Sequent Symmetry running Dynix version 3 |
| (<code>i386-sequent-bsd</code>) was contributed by Jason Merrill. |
| |
| <li>The timezone support code is derived from the public-domain timezone |
| package by Arthur David Olson and his many contributors. |
| |
| <li>The port to the DEC Alpha running OSF/1 (<code>alpha-dec-osf1</code>) was |
| contributed by Brendan Kehoe, using some code written by Roland McGrath. |
| |
| <li>The port to SGI machines running Irix 4 (<code>mips-sgi-irix4</code>) was |
| contributed by Tom Quinn. |
| |
| <li>The port of the Mach and Hurd code to the MIPS architecture |
| (<code>mips-</code><var>anything</var><code>-gnu</code>) was contributed by Kazumoto Kojima. |
| |
| <li>The floating-point printing function used by <code>printf</code> and friends |
| and the floating-point reading function used by <code>scanf</code>, |
| <code>strtod</code> and friends were written by Ulrich Drepper. The |
| multi-precision integer functions used in those functions are taken from |
| GNU MP, which was contributed by Torbjörn Granlund. |
| |
| <li>The internationalization support in the library, and the support |
| programs <code>locale</code> and <code>localedef</code>, were written by Ulrich |
| Drepper. Ulrich Drepper adapted the support code for message catalogs |
| (<samp><span class="file">libintl.h</span></samp>, etc.) from the GNU <code>gettext</code> package, which he |
| also wrote. He also contributed the <code>catgets</code> support and the |
| entire suite of multi-byte and wide-character support functions |
| (<samp><span class="file">wctype.h</span></samp>, <samp><span class="file">wchar.h</span></samp>, etc.). |
| |
| <li>The implementations of the <samp><span class="file">nsswitch.conf</span></samp> mechanism and the files |
| and DNS backends for it were designed and written by Ulrich Drepper and |
| Roland McGrath, based on a backend interface defined by Peter Eriksson. |
| |
| <li>The port to Linux i386/ELF (<code>i386-</code><var>anything</var><code>-linux</code>) was |
| contributed by Ulrich Drepper, based in large part on work done in |
| Hongjiu Lu's Linux version of the GNU C Library. |
| |
| <li>The port to Linux/m68k (<code>m68k-</code><var>anything</var><code>-linux</code>) was |
| contributed by Andreas Schwab. |
| |
| <li>The ports to Linux/ARM (<code>arm-</code><var>ANYTHING</var><code>-linuxaout</code>) and ARM |
| standalone (<code>arm-</code><var>ANYTHING</var><code>-none</code>), as well as parts of the |
| IPv6 support code, were contributed by Philip Blundell. |
| |
| <li>Richard Henderson contributed the ELF dynamic linking code and other |
| support for the Alpha processor. |
| |
| <li>David Mosberger-Tang contributed the port to Linux/Alpha |
| (<code>alpha-</code><var>anything</var><code>-linux</code>). |
| |
| <li>The port to Linux on PowerPC (<code>powerpc-</code><var>anything</var><code>-linux</code>) |
| was contributed by Geoffrey Keating. |
| |
| <li>Miles Bader wrote the argp argument-parsing package, and the argz/envz |
| interfaces. |
| |
| <li>Stephen R. van den Berg contributed a highly-optimized <code>strstr</code> function. |
| |
| <li>Ulrich Drepper contributed the <code>hsearch</code> and <code>drand48</code> |
| families of functions; reentrant ‘<samp><span class="samp">...</span><code>_r</code></samp>’ versions of the |
| <code>random</code> family; System V shared memory and IPC support code; and |
| several highly-optimized string functions for i<var>x</var>86 processors. |
| |
| <li>The math functions are taken from <code>fdlibm-5.1</code> by Sun |
| Microsystems, as modified by J.T. Conklin, Ian Lance Taylor, |
| Ulrich Drepper, Andreas Schwab, and Roland McGrath. |
| |
| <li>The <code>libio</code> library used to implement <code>stdio</code> functions on |
| some platforms was written by Per Bothner and modified by Ulrich Drepper. |
| |
| <li>Eric Youngdale and Ulrich Drepper implemented versioning of objects on |
| the symbol level. |
| |
| <li>Thorsten Kukuk provided an implementation for NIS (YP) and NIS+, |
| securelevel 0, 1 and 2. |
| |
| <li>Andreas Jaeger provided a test suite for the math library. |
| |
| <li>Mark Kettenis implemented the utmpx interface and an utmp daemon. |
| |
| <li>Ulrich Drepper added character conversion functions (<code>iconv</code>). |
| |
| <li>Thorsten Kukuk provided an implementation for a caching daemon for NSS |
| (nscd). |
| |
| <li>Tim Waugh provided an implementation of the POSIX.2 wordexp function family. |
| |
| <li>Mark Kettenis provided a Hesiod NSS module. |
| |
| <li>The Internet-related code (most of the <samp><span class="file">inet</span></samp> subdirectory) and |
| several other miscellaneous functions and header files have been |
| included from 4.4 BSD with little or no modification. The copying |
| permission notice for this code can be found in the file <samp><span class="file">LICENSES</span></samp> |
| in the source distribution. |
| |
| <li>The random number generation functions <code>random</code>, <code>srandom</code>, |
| <code>setstate</code> and <code>initstate</code>, which are also the basis for the |
| <code>rand</code> and <code>srand</code> functions, were written by Earl T. Cohen |
| for the University of California at Berkeley and are copyrighted by the |
| Regents of the University of California. They have undergone minor |
| changes to fit into the GNU C library and to fit the ISO C<!-- /@w --> standard, |
| but the functional code is Berkeley's. |
| |
| <li>The DNS resolver code is taken directly from BIND 4.9.5, which |
| includes copyrighted code from UC Berkeley and from Digital Equipment |
| Corporation. See the file <samp><span class="file">LICENSES</span></samp> for the text of the DEC license. |
| |
| <li>The code to support Sun RPC is taken verbatim from Sun's |
| <span class="sc">rpcsrc-4.0</span><!-- /@w --> distribution; see the file <samp><span class="file">LICENSES</span></samp> for the |
| text of the license. |
| |
| <li>Some of the support code for Mach is taken from Mach 3.0 by CMU; |
| the file if_ppp.h is also copyright by CMU, but under a different license; |
| see the file <samp><span class="file">LICENSES</span></samp> for the text of the licenses. |
| |
| <li>Many of the IA64 math functions are taken from a collection of |
| “Highly Optimized Mathematical Functions for Itanium” that Intel |
| makes available under a free license; see the file <samp><span class="file">LICENSES</span></samp> for |
| details. |
| |
| <li>The <code>getaddrinfo</code> and <code>getnameinfo</code> functions and supporting |
| code were written by Craig Metz; see the file <samp><span class="file">LICENSES</span></samp> for |
| details on their licensing. |
| |
| <li>Many of the IEEE 64-bit double precision math functions |
| (in the <samp><span class="file">sysdeps/ieee754/dbl-64</span></samp> subdirectory) come |
| from the IBM Accurate Mathematical Library, contributed by IBM. |
| |
| </ul> |
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