GNU Info

(libc.info)Arithmetic

---

Next: Date and Time Prev: Mathematics Up: Top

---

Enter node , (file) or (file)node

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.