---

20 Arithmetic Functions

This chapter contains information about functions for doing basic arithmetic operations, such as splitting a float into its integer and fractional parts or retrieving the imaginary part of a complex value. These functions are declared in the header files math.h and complex.h.

• Integers
• Integer Division
• Floating Point Numbers
• Floating-Point Number Classification Functions
• Errors in Floating-Point Calculations
• Rounding Modes
• Floating-Point Control Functions
• Arithmetic Functions
• Complex Numbers
• Projections, Conjugates, and Decomposing of Complex Numbers
• Parsing of Numbers
• Printing of Floats
• Old-fashioned System V number-to-string functions