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<html>
<head>
<title>Resume for Howard E. Hinnant</title>
<style>
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<body>
<h1 align=center>Howard E. Hinnant</h1>
<address align=center><a href="mailto:howard.hinnant@gmail.com">howard.hinnant@gmail.com</a></address>
<address align=center><a href="http://howardhinnant.github.io">http://howardhinnant.github.io</a></address>
<h2>Objective:</h2>
<p>
Enjoy life.
</p>
<h2>Major Accomplishments:</h2>
<ul>
<li><p>
Lead C++ expert on the
<a href="https://ripple.com/xrp/">XRP Network software</a>. This payment
network is operational 24/7 every day of the year, and has the highest transaction
processing speed combined with the lowest transaction cost of any blockchain technology.
</p></li>
<li><p>
Designed and contributed the calendrical and time zone additions to the
<code><chrono></code> library for C++20.
</p></li>
<li><p>
Member C++ Directions Group 2018 to present. Chairman for the year 2019.
</p></li>
<li><p>
Lead designer and author of the following C++11 Standard features:
</p>
<ul>
<li>Move Semantics, including all impact on the containers, algorithms and iterators.</li>
<li><code>unique_ptr</code>.</li>
<li><code><mutex></code>, <code><condition_variable></code> and <code><thread></code> multithreading utilities.</li>
<li><code><chrono></code> time utilities.</li>
</ul>
</li>
<li><p>
Lead designer and author of <code><shared_mutex></code> for C++14.
</p></li>
<li><p>
Chairman of the Library Working Group, C++ Standards committee 2005-2010.
</p></li>
<li><p>
Lead author of <a href="http://libcxx.llvm.org">libc++</a>, an open source
implementation of the C++11 standard library.
</p></li>
<li><p>
Co-Lead author of <a href="http://libcxxabi.llvm.org">libc++abi</a>, an open source
implementation of the <a href="http://mentorembedded.github.io/cxx-abi/">Itanium ABI</a>.
</p></li>
</ul>
<h2>Experience:</h2>
<p>
<b>Retired</b><br>
November 2024 - present
</p>
<p>
<b>Senior Software Developer</b><br>
<a href="http://www.ripple.com/">Ripple</a><br>
February 2014 - November 2024 (10 years)
</p>
<blockquote>
<p>
Senior team member on
<a href="https://github.com/ripple/rippled">rippled</a>.
The rippled application is a C++ application that provides the
blockchain technology for the <a href="https://coinmarketcap.com">XRP digital asset</a>
and is the foundation of RippleNet.
</p>
</blockquote>
<p>
<b>Senior Library Engineer</b><br>
<a href="http://www.apple.com/">Apple</a><br>
October 2005 - February 2014 (8 years)
</p>
<blockquote>
<p>
Provided C++ library and compiler runtime support for the
<a href="http://www.apple.com/macosx/developertools/xcode.html">Xcode</a>
Developer's toolset. Provides C++ expertise to
Apple and to Apple's customers/developers.
</p>
<p>
Wrote all major components of
<a href="http://libcxx.llvm.org">libc++</a>,
a complete and open source implementation of the C++11
standard library.
</p>
<p>
Co-wrote
<a href="http://libcxxabi.llvm.org">libc++abi</a>,
a complete and open source implementation of the
<a href="http://mentorembedded.github.io/cxx-abi/">Itanium ABI</a>.
</p>
<p>
Represents Apple's interests
at the C++ Standards Meetings. Served as the Library Working Group Chairman
from 2005 to 2010. Has successfully led the effort to standardize
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2027.html">move semantics</a>,
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2447.htm">threading</a>,
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2661.htm">time representation</a>
and more in C++11.
</p>
<p>
Has worked remotely from home office in Ithaca for the duration of this job,
managing own network of computers, and seamlessly interacting with Apple
employees.
</p>
</blockquote>
<p>
<b>Senior Library Engineer</b><br>
<a href="http://www.freescale.com/">Freescale</a>, formerly
Metrowerks
a subsidiary of <a href="http://www.motorola.com">Motorola</a><br>
November 1997 - October 2005 (8 years)
</p>
<blockquote>
<p>
Provides complete product delivery and support for the Freescale implementation
of the standard C++ library (MSL C++) as part of the
<a href="http://www.freescale.com/webapp/sps/site/homepage.jsp?nodeId=012726">CodeWarrior</a>
Developer's Tool Set. This includes a complete and independent
implementation of the C++ standard (chapters 17-27), with special optimizations
for higher performance and lower code size (motivated by embedded systems) not
seen on any other implementation. This library also includes many Freescale
custom extensions. Duties include high-level design, implementation design,
writing unit tests for these libraries, documentation, and customer support.
</p>
<p>
Represents Freescale at the C++ Standards Meetings (biannual).
<a href="http://www.open-std.org/jtc1/sc22/wg21/">Member ANSI J16 / ISO
WG21</a>.
Currently serving as Library Working Group Chairman. Responsible for overseeing
the interests of Freescale, implementing changes in the standard in MSL C++, and
driving changes to improve the C++ language industry wide. </p>
<p>
Has worked remotely from home office in Ithaca for the duration of this job,
managing own network of computers, and seamlessly interacting with Freescale
employees worldwide. </p>
</blockquote>
<p>
<b>Senior Scientist</b><br>
Beam Technologies<br> January 1996 - November 1997 (2 years)
</p>
<blockquote>
<p>
Key member of a small team which brought a software project from an early alpha
stage to a commercial release. This project, written mostly in C++ (some Java),
was a unique tool for solving partial differential equations. Unlike traditional
codes, it was not specialized to a specific equation, and was thus widely
applicable. We demonstrated applications in elasticity, electrodynamics,
thermals, fluids, chemistry and finance. Involved both symbolic and numerical
computation. </p>
</blockquote>
<p>
<b>Aerospace Engineer</b><br>
<a href="http://www.arl.army.mil/vtd/vtcindex.html">U.S. Army Research
Laboratory</a><br>
February 1987 - December 1995 (9 years)
</p>
<blockquote>
<p>
Co-located with <a href="http://www.nasa.gov/centers/langley/home/index.html">
NASA Langley</a>, fully integrated with NASA organization.
</p>
<p>
Involved in the development of sparse, positive definite solvers for use in
finite element codes. Explored the use of C++ as a replacement language for high
performance numerical work, (typically done in Fortran at the time). </p>
<p>
Used shape optimization with the finite element method to redesign flight
critical component on a fielded military rotorcraft, reducing peak stresses and
subsequently increasing the lifetime and safety of this component. I was brought
on to this project in response to several catastrophic failures, some of which
unfortunately resulted in fatalities. </p>
<p>
Explored advanced finite element techniques including "p-version" elements, and
new element quadrature techniques. </p>
</blockquote>
<p>
<b>Aerospace Engineer</b><br>
<a href="http://rotorcraft.arc.nasa.gov/">U.S. Army Aviation
Research and Technology</a><br>
June 1984 - February 1987 (3 years)
</p>
<blockquote>
<p>
Co-located with <a href="http://www.nasa.gov/centers/ames/home/index.html">NASA
Ames</a>.
</p>
<p>
Part of GRASP (General Rotorcraft Aeromechanics Stability Program) development
team. Fortran code designed to couple rotorcraft aerodynamics and nonlinear beam
finite elements to predict the natural frequencies and damping of advanced
hinge-less rotors. </p>
</blockquote>
<h2>C++ Committee Papers:</h2>
<ul>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r7.html">P0355R7</a> Extending <code><chrono></code> to Calendars and Time Zones
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0463r1.html">P0463R1</a> <code>endian</code>, Just <code>endian</code>
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0092r1.html">P0092R1</a> Polishing <code><chrono></code>
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4094.html">N4094</a> Response To: Let <code>return {expr}</code> Be Explicit
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3980.html">N3980</a> Types Don't Know #
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3427.html">N3427</a> Shared locking in C++
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3142.html">N3142</a> Adjustments to constructor and assignment traits
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2951.html">N2951</a> <code>forward</code>
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2835.html">N2835</a> <code>forward</code>
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2661.htm">N2661</a> A Foundation to Sleep On
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2498.html">N2498</a> Custom Time Duration Support
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2497.html">N2497</a> Multi-threading Library for Standard C++ (Revision 1)
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2447.htm">N2447</a> Multi-threading Library for Standard C++
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2406.html">N2406</a> Mutex, Lock, Condition Variable Rationale
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2320.html">N2320</a> Multi-threading Library for Standard C++
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2255.html">N2255</a> Minor Modifications to the type traits Wording
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2199.html">N2199</a> Improved <code>min/max</code>
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2184.html">N2184</a> Thread Launching for C++0X
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2158.html">N2158</a> LWG Issue 206: Linking new/delete operators
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.html">N2118</a> A Proposal to Add an Rvalue Reference to the C++ Language
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2094.html">N2094</a> Multithreading API for C++0X - A Layered Approach
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2027.html">N2027</a> A Brief Introduction to Rvalue References
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1953.html">N1953</a> Upgrading the Interface of Allocators using API Versioning
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1862.html">N1862</a> Rvalue Reference Recommendations for Chapter 27
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1861.html">N1861</a> Rvalue Reference Recommendations for Chapter 26
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1860.html">N1860</a> Rvalue Reference Recommendations for Chapter 25
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1859.html">N1859</a> Rvalue Reference Recommendations for Chapter 24
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1858.html">N1858</a> Rvalue Reference Recommendations for Chapter 23
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1857.html">N1857</a> Rvalue Reference Recommendations for Chapter 21
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1856.html">N1856</a> Rvalue Reference Recommendations for Chapter 20
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1780.html">N1780</a> Comments on LWG issue 233: Insertion hints in associative containers
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1771.html">N1771</a> Impact of the rvalue reference on the Standard Library
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1770.html">N1770</a> A Proposal to Add an Rvalue Reference to the C++ Language
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1690.html">N1690</a> A Proposal to Add an Rvalue Reference to the C++ Language
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1599.html">N1599</a> Issue 431: Swapping containers with unequal allocators
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1589.html">N1589</a> complex and Issue 387
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2003/n1523.htm">N1523</a> Proposed Resolution To LWG issues 225, 226, 229 (revision 1)
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1377.htm">N1377</a> A Proposal to Add Move Semantics Support to the C++ Language
</li>
<li>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2001/n1289.html">N1289</a> Comments on Lib Issues 225 and 229
</li>
</ul>
<h2>Presentations:</h2>
<ul>
<li>
<a href="https://www.youtube.com/watch?v=adSAN282YIw">Meeting C++ 2019 - Design Rationale for the chrono Library</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=hobFOAehwio">Meeting C++ 2019 - How to initialize x from expression y</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=Q-4fzrhgBTg">CppCon 2018 - <code><chrono></code> Then and Now</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=P32hvk8b13M">A <chrono> Tutorial</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=Vwd3pduVGKY">Welcome To The Time Zone</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=tzyGjOm8AKo">A C++14 Approach to Dates and Times</a>
</li>
<li>
<a href="https://www.youtube.com/watch?v=Njjp_MJsgt8&feature=youtu.be">Types Don't Know #</a>
</li>
<li>
<a href="https://youtu.be/vLinb2fgkHk">Everything You Ever Wanted To Know About Move Semantics</a>
</li>
</ul>
<h2>Informal Writing:</h2>
<ul>
<li>
<a href="coding_guidelines.html">C++ Coding Guidelines</a>
</li>
<li>
<a href="classdecl.html">How I Declare My class And Why</a>
</li>
<li>
<a href="date_algorithms.html">chrono-Compatible Low-Level Date Algorithms</a>
</li>
<li>
<a href="TypeHiearchy.pdf">Type Hierarchy</a>
</li>
<li>
<a href="onvectorbool.html">On <code>vector<bool></code></a>
</li>
<li>
<a href="unique_ptr03.html">Brief tutorial for <code>unique_ptr</code></a>
</li>
<li>
<a href="incomplete.html">Incomplete types and <code>shared_ptr / unique_ptr</code></a>
</li>
<li>
<a href="combinations.html">Combinations and Permutations</a>
</li>
<li>
<a href="stack_alloc.html">short_alloc</a>
</li>
<li>
<a href="duration_io/chrono_util.html"><code><chrono></code> Utilities</a>
</li>
<li>
<a href="duration_io/chrono_io.html"><code>chrono</code> I/O</a>
</li>
<li>
<a href="date.html"><code>chrono::date</code></a>
</li>
<li>
<a href="On_list_size.html">On <code>std::list::size</code></a>
</li>
<li>
<a href="date_algorithms.html">Date Algorithms</a>
</li>
</ul>
<h2>Education:</h2>
<p>
<a href="http://www.stanford.edu/"><b>Stanford University</b></a><br>
MS, Aeronautics and Astronautics<br> September 1983 - June 1984
</p>
<p>
<a href="http://www.tamu.edu/"><b>Texas A&M University</b></a><br>
BS, Aerospace Engineering<br> September 1979 - May 1983
</p>
</body>
</html>