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BN_value_one (3)
  • >> BN_value_one (3) ( Разные man: Библиотечные вызовы )
  •  

    NAME

    BN_zero, BN_one, BN_value_one, BN_set_word, BN_get_word - BIGNUM assignment
    operations
     
    

    SYNOPSIS

     #include <openssl/bn.h>
    
    

     int BN_zero(BIGNUM *a);
     int BN_one(BIGNUM *a);
    
    

     const BIGNUM *BN_value_one(void);
    
    

     int BN_set_word(BIGNUM *a, unsigned long w);
     unsigned long BN_get_word(BIGNUM *a);
    
    
     

    DESCRIPTION

    BN_zero(), BN_one() and BN_set_word() set a to the values 0, 1 and w respectively. BN_zero() and BN_one() are macros.

    BN_value_one() returns a BIGNUM constant of value 1. This constant is useful for use in comparisons and assignment.

    BN_get_word() returns a, if it can be represented as an unsigned long.  

    RETURN VALUES

    BN_get_word() returns the value a, and 0xffffffffL if a cannot be represented as an unsigned long.

    BN_zero(), BN_one() and BN_set_word() return 1 on success, 0 otherwise. BN_value_one() returns the constant.  

    BUGS

    Someone might change the constant.

    If a BIGNUM is equal to 0xffffffffL it can be represented as an unsigned long but this value is also returned on error.  

    SEE ALSO

    bn(3), BN_bn2bin(3)  

    HISTORY

    BN_zero(), BN_one() and BN_set_word() are available in all versions of SSLeay and OpenSSL. BN_value_one() and BN_get_word() were added in SSLeay 0.8.

    BN_value_one() was changed to return a true const BIGNUM * in OpenSSL 0.9.7.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    BUGS
    SEE ALSO
    HISTORY


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