按照官方的说法：Cairo is a vector graphics library with cross-device output support.
翻译过来，就是cairo是一个支持多种输出的向量图形库。
具体解释一下，也就是说，cairo是种画图的工具库，他可以向多种设备上画图，比如：
cairo可以输出到png,可以输出到pdf，可以输出到ps，可以输出到xlib，可以输出到XCB，可 ...
The Intel® JPEG Library provides a set of highly optimized C functions that implement JPEG compression and decompression on Intel architecture processors
The Spectral Toolkit is a C++ spectral transform library written by Rodney James and Chuck Panaccione while at the National Center for Atmospheric Research between 2002 and 2005. The library contains a functional subset of FFTPACK and SPHEREPACK, including real and complex FFTs in 1-3 dimensions, an ...
