low_str_strcspn

Find a substring in a string. 

l_size_t 	low_str_strcspn ( 
		cl_text 		s1, 
		cl_text 		set
);

Return Value

Returns an integer value specifying the length of the initial segment of string @s1 
that consists entirely of characters not in @set. If string begins with a character 
that is in @set, the function returns 0.  No return value is reserved to indicate an error.

Parameters

s1

Null-terminated searched string

set

Null-terminated character set

Remarks

The low_str_strcspn function returns the index of the first occurrence of a character 
in string that belongs to the set of characters in @set. Terminating null characters are 
included in the search.