Numerics library

< cpp

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


[edit] Common mathematical functions

The header cmath provides standard C library mathematical functions such as std::fabs, std::sqrt, and std::sin.

Special mathematical functions

The header cmath also provides special mathematical functions and polymonials such as std::beta, std::hermite, and std::cyl_bessel_i.

(since C++17)

[edit] Complex numbers

Defined in header <complex>
a complex number type
(class template)

[edit] Numeric arrays

Defined in header <valarray>
numeric arrays and array slices
(class template)

[edit] Generic numeric operations

Defined in header <numeric>
fills a range with successive increments of the starting value
(function template)
sums up a range of elements
(function template)
similar to std::accumulate, except out of order
(function template)
applies a functor, then reduces out of order
(function template)
computes the inner product of two ranges of elements
(function template)
computes the differences between adjacent elements in a range
(function template)
computes the partial sum of a range of elements
(function template)
similar to std::partial_sum, includes the ith input element in the ith sum
(function template)
similar to std::partial_sum, excludes the ith input element from the ith sum
(function template)
applies a functor, then calculates inclusive scan
(function template)
applies a functor, then calculates exclusive scan
(function template)

[edit] Pseudo-random number generation

The header random defines pseudo-random number generators and numerical distributions. The header cstdlib also includes C-style random number generation via std::srand and std::rand.

[edit] Compile time rational arithmetic (since C++11)

The header ratio provides types and functions for manipulating and storing compile-time ratios.

[edit] Floating-point environment(since C++11)

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

[edit] See also

C documentation for Numerics