4. Mathematical Functions

This chapter describes basic mathematical functions. Some of these functions are present in system libraries, but the alternative versions given here can be used as a substitute when the system functions are not available.

The functions and macros described in this chapter are defined in the header file `gsl_math.h'.

4.1 Mathematical Constants
4.2 Infinities and Not-a-number
4.3 Elementary Functions
4.4 Small integer powers
4.5 Testing the Sign of Numbers
4.6 Testing for Odd and Even Numbers
4.7 Maximum and Minimum functions