ref: 02a26802ffbd64ebf993119e1599920ffee01ef0
dir: /sys/src/libmp/port/mpmod.c/
#include "os.h" #include <mp.h> #include "dat.h" void mpmod(mpint *x, mpint *n, mpint *r) { int sign; mpint *ns; sign = x->sign; ns = sign < 0 && n == r ? mpcopy(n) : n; if((n->flags & MPfield) == 0 || ((Mfield*)n)->reduce((Mfield*)n, x, r) != 0) mpdiv(x, n, nil, r); if(sign < 0){ mpmagsub(ns, r, r); if(ns != n) mpfree(ns); } }