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BN_add_word(3)							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 integers

SYNOPSIS
       #include <openssl/bn.h>

       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 arith‐
       metic operations.

       The BN_add_word() function adds w to a (a+=w).

       The BN_sub_word() function subtracts w from a (a-=w).

       The BN_mul_word() function multiplies a and w (a*=b).

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

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

       For the BN_div_word() and BN_mod_word() functions, the value of w  must
       not be 0.

RETURN VALUES
       The  BN_add_word(), BN_sub_word(), and BN_mul_word() functions return 1
       for success, 0 on error. The error codes can be obtained by  using  the
       ERR_get_error() function.

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

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

SEE ALSO
       Functions: bn(3), err(3), BN_add(3)

								BN_add_word(3)
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