Numerics - cppreference.com (original) (raw)

The C numerics library includes common mathematical functions and types, as well as support for random number generation.

Contents

• 1 Common mathematical functions
• 2 Floating-point environment
• 3 Pseudo-random number generation
• 4 Complex number arithmetic
• 5 Type-generic math
• 6 Bit manipulation (since C23)
• 7 Checked integer arithmetic (since C23)
• 8 See also

[edit] Common mathematical functions

The header <math.h> provides standard C library mathematical functions such as fabs, sqrt, and sin.

[edit] Floating-point environment

The header <fenv.h> defines flags and functions related to exceptional floating-point state, such as overflow and division by zero.

[edit] Pseudo-random number generation

The header <stdlib.h> also includes C-style random number generation via srand and rand.

[edit] Complex number arithmetic

The header <complex.h> provides types and functions to work with complex numbers.

[edit] Type-generic math

The header <tgmath.h> provides some macros for a function which names XXX:

• real function:

• float variant XXXf

• double variant XXX

• long double variant XXXl

• complex function:

• float variant cXXXf

• double variant cXXX

• long double variant cXXXl

[edit] Bit manipulation (since C23)

The header <stdbit.h> provides macros and functions to work with the byte ordering and byte and bit representation of C objects.

[edit] Checked integer arithmetic (since C23)

Provides some type-generic macros for checked integer arithmetic:

[edit] See also