BLAS,全称Basic Linear Algebra Subprograms，即基础线性代数子程序库，里面拥有大量已经编写好的关于线性代数运算的程序。
摘录：
BLAS Index (Levels 1, 2, and 3) #
# #
# NOTE: All BLAS routines are listed in the order in which #
# they appear on the BLAS Quick Reference Guide. #
# #
# Organization of this index: #
# Documentation and Test Suites #
# Miscellaneous and Auxiliary Routines #
# Level 1 BLAS routines #
# Level 2 BLAS routines #
# Level 3 BLAS routines #
# Extended precision Level 2 BLAS routines #