Fabrice Bellard

Fabrice Bellard ([ faˈbʁis bɛˈlaʁ ]; * 1972 in Grenoble ) is a French software developer and mathematician .

He went to school at the Lycée Joffre in Montpellier and studied at the École polytechnique and the École nationale supérieure des télécommunications .

He is the main developer of

• the emulator QEMU , an open source program that can emulate the execution of the four operating systems Windows , Linux , Mac OS X and Solaris under other operating systems on the system architectures x86 , PowerPC and SPARC .
• Tiny C Compiler , a C compiler, small but complete; he originally wrote it to win the International Obfuscated C Code Contest .

He was the first developer of FFmpeg , an open source software for audio and video compression.

history

On September 22, 1997, he won the world record for calculating the decimal places of pi using a method derived from the Bailey-Borwein-Plouffe formula .

In January 2010 he again set the record for the calculation of decimal places of the circle number Pi. In 131 days he calculated 2,699,999,990,000 decimal places with a standard Core i7 PC, almost 2.7 trillion .

In May 2011 he published a PC emulator programmed only in JavaScript based on typed arrays . The emulated hardware consists of a 32-bit x86 -compatible main processor , an 8259 programmable interrupt controller , an 8254 programmable interrupt timer and a 16450 UART .

On September 2, 2012, he published a complete software implementation of an LTE base station that can run on any PC without any special hardware.

In 2014 he published the new image compression format Better Portable Graphics (BPG), which delivers significantly better quality with the same file size than JPEG . The display is made possible in all current browsers by means of an approx. 72 kB JavaScript program.

In December 2016 he released an emulator for the RISC-V architecture (RISCVEMU).

On July 9, 2019, he released QuickJS, a JavaScript engine written in C.

Web links

• Fabrice Bellards Homepage (English)
• QuickJS

Individual evidence

1. ↑ Desktop PC calculates Pi at 2.7 trillion digits - Article at WinFuture , January 5th, 2010
2. ↑ Pi buster: software whiz claims record ( Memento of the original from May 20, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (English) - Article (with picture) in I Have Nothing , January 8, 2010 
3. ↑ Javascript PC Emulator - Technical Notes (English) - Fabrice Bellard's website , May 14, 2011
4. ↑ Fabrice Bellard: PC emulator in Javascript boots Linux - Article at Golem.de , from May 17, 2011
5. ↑ LTE Base Station Software (English) - Fabrice Bellard's website , September 3, 2012
6. ↑ Andreas Donath: New image format should replace JPEG. Golem.de , December 8, 2014, accessed December 8, 2014 . 
7. ↑ Fabrice Bellard: BPG / JPEG comparison on the Lena picture. Retrieved December 8, 2014 . 
8. ↑ RISCVEMU: RISC-V System Emulator, Can Boot Fedora. In: www.phoronix.com. December 20, 2016, accessed December 22, 2016 .