5.5.4.1 Character Set Predicates/Comparison
Use these procedures for testing whether an object is a character set,
or whether several character sets are equal or subsets of each other.
char-set-hash can be used for calculating a hash value, maybe for
usage in fast lookup procedures.
— Scheme Procedure:
char-set? obj
— C Function:
scm_char_set_p (
obj)
Return #t if obj is a character set, #f
otherwise.
— Scheme Procedure:
char-set= . char_sets
— C Function:
scm_char_set_eq (
char_sets)
Return #t if all given character sets are equal.
— Scheme Procedure:
char-set<= . char_sets
— C Function:
scm_char_set_leq (
char_sets)
Return #t if every character set csi is a subset
of character set csi+1.
— Scheme Procedure:
char-set-hash cs [
bound]
— C Function:
scm_char_set_hash (
cs, bound)
Compute a hash value for the character set cs. If
bound is given and non-zero, it restricts the
returned value to the range 0 ... bound - 1.