ref: ef4fa80a34dc54cd42fe3e0c157dcede5f5ed207
dir: /3rd/mp/mptoi.c/
#include "platform.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); } b->sign = (i >> (sizeof(i)*8 - 1)) | 1; i *= b->sign; *b->p = i; b->top = 1; return mpnorm(b); } int mptoi(mpint *b) { mpdigit x; if(b->top == 0) return 0; x = *b->p; x = b->sign > 0 ? ((b->top > 1 || x > INT32_MAX) ? (int)INT32_MAX : (int)x) : ((b->top > 1 || x > INT32_MAX) ? (int)INT32_MIN : -(int)x); return x; }