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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