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BN_add_word(3)               OpenSSL               BN_add_word(3)

NAME
       BN_add_word, BN_sub_word, BN_mul_word, BN_div_word,
       BN_mod_word - arithmetic functions on BIGNUMs with inte-
       gers

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);

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 w to a ("a+=w").

       BN_sub_word() subtracts w from a ("a-=w").

       BN_mul_word() multiplies a and w ("a*=b").

       BN_div_word() divides a by w ("a/=w") and returns the
       remainder.

       BN_mod_word() returns the remainder of a divided by w
       ("a%m").

       For BN_div_word() and BN_mod_word(), w must not be 0.

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 ERR_get_error(3).

       BN_mod_word() and BN_div_word() return a%w.

SEE ALSO
       bn(3), ERR_get_error(3), BN_add(3)

HISTORY
       BN_add_word() and BN_mod_word() are available in all ver-
       sions of SSLeay and OpenSSL. BN_div_word() was added in
       SSLeay 0.8, and BN_sub_word() and BN_mul_word() in SSLeay
       0.9.0.

0.9.7c                      2002-09-25             BN_add_word(3)

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