shithub: femtolisp

ref: 778666f04ceea0a943829b1d5509cd2c8ed17824
dir: /3rd/mp/mptoui.c/

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#include "platform.h"

/*
 *  this code assumes that mpdigit is at least as
 *  big as an int.
 */

mpint*
uitomp(uint32_t i, mpint *b)
{
	if(b == nil)
		b = mpnew(0);

	*b->p = i;
	b->top = 1;
	b->sign = 1;
	return mpnorm(b);
}

uint32_t
mptoui(mpint *b)
{
	mpdigit x;

	x = *b->p;
	if(b->sign < 0)
		x = 0;
	else if(b->top > 1 || (Dbytes > sizeof(uint32_t) && x > UINT32_MAX))
		x =  UINT32_MAX;
	return x;
}