std::char_traits<CharT>::compare
From cppreference.com
< cpp | string | char traits
static int compare( const char_type* s1, const char_type* s2, std::size_t count ); |
(until C++17) | |
static constexpr int compare( const char_type* s1, const char_type* s2, std::size_t count ); |
(since C++17) | |
Compares the first count
characters of the character strings s1
and s2
. The comparison is done lexicographically.
If count
is zero, strings are considered equal.
Parameters
s1, s2 | - | pointers to character strings to compare |
count | - | the number of characters to compare from each character string |
Return value
Negative value if s1
is less than s2
.
0 if s1
is equal to s2
.
Positive value if s1
is greater than s2
.
Exceptions
(none)
Complexity
Linear in count
.