ref: caef73363f896a1405ce6b9b6435f91e47a9b188
dir: /libmp/port/mptoi.c/
#include "os.h" #include <mp.h> #include "dat.h" /* * this code assumes that mpdigit is at least as * big as an int. */ mpint* itomp(int i, mpint *b) { if(b == nil) b = mpnew(0); mpassign(mpzero, b); if(i != 0) b->top = 1; if(i < 0){ b->sign = -1; *b->p = -i; } else *b->p = i; return b; } int mptoi(mpint *b) { uint x; if(b->top==0) return 0; x = *b->p; if(b->sign > 0){ if(b->top > 1 || (x > MAXINT)) x = (int)MAXINT; else x = (int)x; } else { if(b->top > 1 || x > MAXINT+1) x = (int)MININT; else x = -(int)x; } return x; }