std:: modulus

From cppreference.com

Function wrappers
function (C++11)
move_only_function (C++23)
copyable_function (C++26)
function_ref (C++26)
mem_fn (C++11)
bad_function_call (C++11)

Partial function application
bind_front bind_back (C++20) (C++23)
bind (C++11)
is_bind_expression (C++11)
is_placeholder (C++11)
_1, _2, _3, ... (C++11)

Function invocation
invoke invoke_r (C++17) (C++23)
Identity function object
identity (C++20)

Reference wrappers
reference_wrapper (C++11)
ref cref (C++11) (C++11)
unwrap_reference unwrap_ref_decay (C++20) (C++20)

Operator wrappers

plus
minus
negate
multiplies
divides
modulus
bit_and
bit_or
bit_not (C++14)
bit_xor

equal_to
not_equal_to
greater
less
greater_equal
less_equal
logical_and
logical_or
logical_not

Transparent operator wrappers

plus <> (C++14)
minus <> (C++14)
negate <> (C++14)
multiplies <> (C++14)
divides <> (C++14)
modulus <> (C++14)
bit_and <> (C++14)
bit_or <> (C++14)
bit_not <> (C++14)
bit_xor <> (C++14)

equal_to <> (C++14)
not_equal_to <> (C++14)
greater <> (C++14)
less <> (C++14)
greater_equal <> (C++14)
less_equal <> (C++14)
logical_and <> (C++14)
logical_or <> (C++14)
logical_not <> (C++14)

Negators
not_fn (C++17)
Searchers
default_searcher (C++17)
boyer_moore_searcher (C++17)
boyer_moore_horspool_searcher (C++17)

Constrained comparators
ranges::equal_to (C++20)
ranges::not_equal_to (C++20)
ranges::greater (C++20)
ranges::less (C++20)
ranges::greater_equal (C++20)
ranges::less_equal (C++20)
compare_three_way (C++20)

Old binders and adaptors

unary_function ( until C++17* )
binary_function ( until C++17* )
ptr_fun ( until C++17* )
pointer_to_unary_function ( until C++17* )
pointer_to_binary_function ( until C++17* )
mem_fun ( until C++17* )
mem_fun_t mem_fun1_t const_mem_fun_t const_mem_fun1_t ( until C++17* ) ( until C++17* ) ( until C++17* ) ( until C++17* )
not1 ( until C++20* )
not2 ( until C++20* )

binder1st binder2nd ( until C++17* ) ( until C++17* )
bind1st bind2nd ( until C++17* ) ( until C++17* )

mem_fun_ref ( until C++17* )
mem_fun_ref_t mem_fun1_ref_t const_mem_fun_ref_t const_mem_fun1_ref_t ( until C++17* ) ( until C++17* ) ( until C++17* ) ( until C++17* )
unary_negate ( until C++20* )
binary_negate ( until C++20* )

Defined in header `<functional>`
template < class T > struct modulus ;		(until C++14)
template < class T = void > struct modulus ;		(since C++14)

Function object for computing remainders of divisions. Implements operator % for type T .

Specializations

The standard library provides a specialization of std::modulus when T is not specified, which leaves the parameter types and return type to be deduced.

modulus <void>

(C++14)

function object implementing x % y deducing parameter and return types
(class template specialization)

(since C++14)

Member types

Type	Definition
`result_type` (deprecated in C++17) (removed in C++20)	`T`
`first_argument_type` (deprecated in C++17) (removed in C++20)	`T`
`second_argument_type` (deprecated in C++17) (removed in C++20)	`T`

These member types are obtained via publicly inheriting std:: binary_function < T, T, T > .

(until C++11)

Member functions

operator()

returns the remainder from the division of the first argument by the second argument
(public member function)

std::modulus:: operator()

T operator ( ) ( const T & lhs, const T & rhs ) const ;		(constexpr since C++14)

Returns the remainder of the division of lhs by rhs .

Parameters

lhs, rhs

values to divide one by another

Return value

The result of lhs % rhs .

Exceptions

May throw implementation-defined exceptions.

Possible implementation

constexpr T operator()(const T& lhs, const T& rhs) const 
{
    return lhs % rhs;
}

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Metaprogramming library (C++11)
Diagnostics library
General utilities library
Strings library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Numerics library
Localizations library
Input/output library
Filesystem library (C++17)
Regular expressions library (C++11)
Concurrency support library (C++11)
Execution support library (C++26)
Technical specifications
Symbols index
External libraries

fmod fmodf fmodl (C++11) (C++11)	remainder of the floating point division operation (function)
remainder remainderf remainderl (C++11) (C++11) (C++11)	signed remainder of the division operation (function)