mp(3MP) 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 <mp.h>
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);
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. Alternatively, 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) rou‐
tines.
The mp_madd(a,b,c), mp_msub(a,b,c) and mp_mult(a,b,c) functions assign
to their third arguments the sum, difference, and product, respec‐
tively, 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) functions 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 functions.
FILES
/usr/lib/libmp.so shared object
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Unsafe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOexp(3M), malloc(3C), libmp(3LIB), attributes(5)DIAGNOSTICS
Illegal operations and running out of memory produce messages 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 compatibility, and should not be used
otherwise. Use the mp_*() functions instead. See libmp(3LIB).
SunOS 5.10 14 Nov 2002 mp(3MP)
