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Multiple Precision Library Functions                      mp(3MP)



NAME
     mp, mp_madd, mp_msub,  mp_mult,  mp_mdiv,  mp_mcmp,  mp_min,
     mp_mout,   mp_pow,   mp_gcd,   mp_rpow,  mp_msqrt,  mp_sdiv,
     mp_itom, mp_xtom, mp_mtox,  mp_mfree  -  multiple  precision
     integer arithmetic

SYNOPSIS
     cc [ flag... ] file... -lmp [ library... ]
     #include 

     void mp_madd(MINT *a, MINT *b, MINT *c);


     void mp_msub(MINT *a, MINT *b, MINT *c);


     void mp_mult(MINT *a, MINT *b, MINT *c);


     void mp_mdiv(MINT *a, MINT *b, MINT *q, MINT *r);


     int mp_mcmp(MINT *a, MINT *b);


     int mp_min(MINT *a);


     void mp_mout(MINT *a);


     void mp_pow(MINT *a, MINT *b, MINT *c, MINT *d);


     void mp_gcd(MINT *a, MINT *b, MINT *c);


     void mp_rpow(MINT *a, short n, MINT *b);


     int mp_msqrt(MINT *a, MINT *b, MINT *r);


     void mp_sdiv(MINT *a, short n, MINT *q, short *r);


     MINT * mp_itom(short n);


     MINT * mp_xtom(char *a);





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Multiple Precision Library Functions                      mp(3MP)



     char * mp_mtox(MINT *a);


     void mp_mfree(MINT *a);


DESCRIPTION
     These functions perform arithmetic on integers of  arbitrary
     length. The integers are stored using the defined type MINT.
     Pointers to a MINT should be initialized using the  function
     mp_itom(n),  which  sets  the  initial  value to n. Alterna-
     tively, mp_xtom(a) may be used to initialize a MINT  from  a
     string  of  hexadecimal  digits.  mp_mfree(a) may be used to
     release  the  storage  allocated  by  the   mp_itom(a)   and
     mp_xtom(a) routines.


     The mp_madd(a,b,c), mp_msub(a,b,c) and mp_mult(a,b,c)  func-
     tions  assign  to their third arguments the sum, difference,
     and product, respectively, of  their  first  two  arguments.
     The  mp_mdiv(a,b,q,r)  function  assigns  the  quotient  and
     remainder, respectively, to its third and fourth  arguments.
     The mp_sdiv(a,n,q,r) function is similar to mp_mdiv(a,b,q,r)
     except  that  the  divisor  is  an  ordinary  integer.   The
     mp_msqrt(a,b,r)   function  produces  the  square  root  and
     remainder of its first argument.  The  mp_mcmp(a,b) function
     compares  the  values of its arguments and returns  0 if the
     two values are equal, a value greater than  0 if  the  first
     argument  is  greater than the second, and a value less than
     0 if the second argument is greater  than  the  first.   The
     mp_rpow(a,n,b)  function  raises  a  to  the  nth  power and
     assigns this value  to  b.  The  mp_pow(a,b  ,c,d)  function
     raises  a to the bth power, reduces the result  modulo c and
     assigns this value to d. The mp_min(a) and mp_mout(a)  func-
     tions  perform  decimal  input and output. The mp_gcd(a,b,c)
     function finds the greatest common divisor of the first  two
     arguments, returning it in the third argument.  The mp_mtox(
     a) function provides the inverse of mp_xtom(a).  To  release
     the   storage   allocated  by  mp_mtox(a)  use  free()  (see
     malloc(3C)).


     Use the -lmp loader option to obtain access to  these  func-
     tions.

FILES
     /usr/lib/libmp.so    shared object


ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



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Multiple Precision Library Functions                      mp(3MP)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | MT-Level                    | Unsafe                      |
    |_____________________________|_____________________________|


SEE ALSO
     exp(3M), malloc(3C), libmp(3LIB), attributes(5)

DIAGNOSTICS
     Illegal operations and running out of  memory  produce  mes-
     sages and core images.

WARNINGS
     The function pow() exists in both libmp and libm with widely
     differing  semantics.  This is the reason libmp.so.2 exists.
     libmp.so.1 exists solely for reasons of backward compatibil-
     ity, and should not be used otherwise. Use the  mp_*() func-
     tions instead.  See libmp(3LIB).



































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