std::char_traits<CharT>::compare (3) - Linux Manuals

std::char_traits<CharT>::compare: std::char_traits<CharT>::compare

NAME

std::char_traits<CharT>::compare - std::char_traits<CharT>::compare

Synopsis

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.