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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: Basic integer types and concepts
• Integer Division: Integer division with guaranteed rounding.
• Floating Point Numbers: Basic concepts. IEEE 754.
• Floating Point Classes: The five kinds of floating-point number.
• Floating Point Errors: When something goes wrong in a calculation.
• Rounding: Controlling how results are rounded.
• Control Functions: Saving and restoring the FPU's state.
• Arithmetic Functions: Fundamental operations provided by the library.
• Complex Numbers: The types. Writing complex constants.
• Operations on Complex: Projection, conjugation, decomposition.
• Parsing of Numbers: Converting strings to numbers.
• System V Number Conversion: An archaic way to convert numbers to strings.