1*8ccd4a63SDavid du Colombier #include "os.h" 2*8ccd4a63SDavid du Colombier #include <mp.h> 3*8ccd4a63SDavid du Colombier #include "dat.h" 4*8ccd4a63SDavid du Colombier 5*8ccd4a63SDavid du Colombier #define VLDIGITS (sizeof(vlong)/sizeof(mpdigit)) 6*8ccd4a63SDavid du Colombier 7*8ccd4a63SDavid du Colombier /* 8*8ccd4a63SDavid du Colombier * this code assumes that a vlong is an integral number of 9*8ccd4a63SDavid du Colombier * mpdigits long. 10*8ccd4a63SDavid du Colombier */ 11*8ccd4a63SDavid du Colombier mpint* uvtomp(uvlong v,mpint * b)12*8ccd4a63SDavid du Colombieruvtomp(uvlong v, mpint *b) 13*8ccd4a63SDavid du Colombier { 14*8ccd4a63SDavid du Colombier int s; 15*8ccd4a63SDavid du Colombier 16*8ccd4a63SDavid du Colombier if(b == nil) 17*8ccd4a63SDavid du Colombier b = mpnew(VLDIGITS*sizeof(mpdigit)); 18*8ccd4a63SDavid du Colombier else 19*8ccd4a63SDavid du Colombier mpbits(b, VLDIGITS*sizeof(mpdigit)); 20*8ccd4a63SDavid du Colombier mpassign(mpzero, b); 21*8ccd4a63SDavid du Colombier if(v == 0) 22*8ccd4a63SDavid du Colombier return b; 23*8ccd4a63SDavid du Colombier for(s = 0; s < VLDIGITS && v != 0; s++){ 24*8ccd4a63SDavid du Colombier b->p[s] = v; 25*8ccd4a63SDavid du Colombier v >>= sizeof(mpdigit)*8; 26*8ccd4a63SDavid du Colombier } 27*8ccd4a63SDavid du Colombier b->top = s; 28*8ccd4a63SDavid du Colombier return b; 29*8ccd4a63SDavid du Colombier } 30*8ccd4a63SDavid du Colombier 31*8ccd4a63SDavid du Colombier uvlong mptouv(mpint * b)32*8ccd4a63SDavid du Colombiermptouv(mpint *b) 33*8ccd4a63SDavid du Colombier { 34*8ccd4a63SDavid du Colombier uvlong v; 35*8ccd4a63SDavid du Colombier int s; 36*8ccd4a63SDavid du Colombier 37*8ccd4a63SDavid du Colombier if(b->top == 0) 38*8ccd4a63SDavid du Colombier return (vlong) 0; 39*8ccd4a63SDavid du Colombier 40*8ccd4a63SDavid du Colombier mpnorm(b); 41*8ccd4a63SDavid du Colombier if(b->top > VLDIGITS) 42*8ccd4a63SDavid du Colombier return MAXVLONG; 43*8ccd4a63SDavid du Colombier 44*8ccd4a63SDavid du Colombier v = (uvlong) 0; 45*8ccd4a63SDavid du Colombier for(s = 0; s < b->top; s++) 46*8ccd4a63SDavid du Colombier v |= b->p[s]<<(s*sizeof(mpdigit)*8); 47*8ccd4a63SDavid du Colombier 48*8ccd4a63SDavid du Colombier return v; 49*8ccd4a63SDavid du Colombier } 50