=pod =head1 NAME BN_add_word, BN_sub_word, BN_mul_word, BN_div_word, BN_mod_word - arithmetic functions on BIGNUMs with integers =head1 SYNOPSIS #include int BN_add_word(BIGNUM *a, BN_ULONG w); int BN_sub_word(BIGNUM *a, BN_ULONG w); int BN_mul_word(BIGNUM *a, BN_ULONG w); BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w); BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w); =head1 DESCRIPTION These functions perform arithmetic operations on BIGNUMs with unsigned integers. They are much more efficient than the normal BIGNUM arithmetic operations. BN_add_word() adds B to B (C). BN_sub_word() subtracts B from B (C). BN_mul_word() multiplies B and B (C). BN_div_word() divides B by B (C) and returns the remainder. BN_mod_word() returns the remainder of B divided by B (C). For BN_div_word() and BN_mod_word(), B must not be 0. =head1 RETURN VALUES BN_add_word(), BN_sub_word() and BN_mul_word() return 1 for success, 0 on error. The error codes can be obtained by L. BN_mod_word() and BN_div_word() return B%B on success and B<(BN_ULONG)-1> if an error occurred. =head1 SEE ALSO L, L =head1 COPYRIGHT Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at L. =cut