<valarray>
Defines the class template valarray<Type> and several supporting class templates and functions.
Requirements
Header: <valarray>
Namespace: std
Note
The <valarray> library uses the #include <initializer_list> statement.
Remarks
These class templates and functions are permitted unusual latitude in the interest of improved performance. Specifically, any function that returns type valarray<T1> may return an object of some other type T2. In that case, any function that accepts one or more arguments of type valarray<T2> must have overloads that accept arbitrary combinations of those arguments, each replaced with an argument of type T2.
Members
Functions
| Name | Description |
|---|---|
abs |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the absolute value of the elements of the input valarray. |
acos |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the arccosine of the elements of the input valarray. |
asin |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the arcsine of the elements of the input valarray. |
atan |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the principal value of the arctangent of the elements of the input valarray. |
atan2 |
Returns a valarray whose elements are equal to the arctangent of the Cartesian components specified by a combination of constants and elements of valarray inputs. |
begin |
|
cos |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the cosine of the elements of the input valarray. |
cosh |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the hyperbolic cosine of the elements of the input valarray. |
end |
|
exp |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the natural exponential of the elements of the input valarray. |
log |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the natural logarithm of the elements of the input valarray. |
log10 |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the base 10 or common logarithm of the elements of the input valarray. |
pow |
Operates on the elements of any input valarray and constants, returning a valarray whose elements are equal to a base specified either by the elements of an input valarray or a constant raised to an exponent specified either by the elements of an input valarray or a constant. |
sin |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the sine of the elements of the input valarray. |
sinh |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the hyperbolic sine of the elements of the input valarray. |
sqrt |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the square root of the elements of the input valarray. |
swap |
|
tan |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the tangent of the elements of the input valarray. |
tanh |
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the hyperbolic tangent of the elements of the input valarray. |
Operators
| Name | Description |
|---|---|
operator!= |
Tests whether the corresponding elements of two equally sized valarray objects are unequal or whether all the elements of a valarray are unequal to a specified value of the valarray object's element type. |
operator% |
Obtains the remainder of dividing the corresponding elements of two equally sized valarray objects or of dividing a valarray by a specified value of the valarray object's element type or of dividing a specified value by a valarray. |
operator& |
Obtains the bitwise AND between corresponding elements of two equally sized valarray objects or between a valarray and a specified value of the element type. |
operator&& |
Obtains the logical AND between corresponding elements of two equally sized valarray objects or between a valarray and a specified value of the valarray object's element type. |
operator> |
Tests whether the elements of one valarray are greater than the elements of an equally sized valarray or whether all the elements of a valarray are greater or less than a specified value of the valarray object's element type. |
operator>= |
Tests whether the elements of one valarray are greater than or equal to the elements of an equally sized valarray or whether all the elements of a valarray are greater than or equal to or less than or equal to a specified value. |
operator>> |
Right-shifts the bits for each element of a valarray a specified number of positions or by an element-wise amount specified by a second valarray. |
operator< |
Tests whether the elements of one valarray are less than the elements of an equally sized valarray or whether all the elements of a valarray are greater or less than a specified value. |
operator<= |
Tests whether the elements of one valarray are less than or equal to the elements of an equally sized valarray or whether all the elements of a valarray are greater than or equal to or less than or equal to a specified value. |
operator<< |
Left shifts the bits for each element of a valarray a specified number of positions or by an element-wise amount specified by a second valarray. |
operator* |
Obtains the element-wise product between corresponding elements of two equally sized valarray objects or of between a valarray a specified value of the valarray object's element type. |
operator+ |
Obtains the element-wise sum between corresponding elements of two equally sized valarray objects or of between a valarray a specified value of the valarray object's element type. |
operator- |
Obtains the element-wise difference between corresponding elements of two equally sized valarray objects or of between a valarray a specified value of the valarray object's element type. |
operator/ |
Obtains the element-wise quotient between corresponding elements of two equally sized valarray objects or of between a valarray a specified value of the valarray object's element type. |
operator== |
Tests whether the corresponding elements of two equally sized valarray objects are equal or whether all the elements of a valarray are equal a specified value of the valarray object's element type. |
operator^ |
Obtains the bitwise exclusive OR between corresponding elements of two equally sized valarray objects or between a valarray and a specified value of the element type. |
operator| |
Obtains the bitwise OR between corresponding elements of two equally sized valarray objects or between a valarray and a specified value of the element type. |
operator|| |
Obtains the logical OR between corresponding elements of two equally sized valarray objects or between a valarray and a specified value of the valarray object's element type. |
Classes
| Name | Description |
|---|---|
gslice class |
A utility class to valarray that is used to define multi-dimensional slices of a valarray. |
gslice_array class |
An internal, auxiliary class template that supports general slice objects by providing operations between subset arrays defined by the general slice of a valarray. |
indirect_array class |
An internal, auxiliary class template that supports objects that are subsets of valarray objects by providing operations between subset arrays defined by specifying a subset of indices of a parent valarray. |
mask_array class |
An internal, auxiliary class template that supports objects that are subsets of parent valarray objects, specified with a Boolean expression, by providing operations between the subset arrays. |
slice class |
A utility class to valarray that is used to define one-dimensional, vector-like subsets of a valarray. |
slice_array class |
An internal, auxiliary class template that supports slice objects by providing operations between subset arrays defined by the slice of a valarray. |
valarray<Type> class |
The class template describes an object that controls a sequence of elements of type Type that are stored as an array and designed for high-speed mathematical operations, optimized for computational performance. |
Specializations
| Name | Description |
|---|---|
valarray<bool> class |
A specialized version of the class template valarray<Type> for elements of type bool. |
See also
Header files reference
Thread safety in the C++ Standard Library