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/* ISC license. */
#include <string.h>
#include <errno.h>
#include <skalibs/alloc.h>
#include <skalibs/stralloc.h>
int stralloc_ready_tuned (stralloc *sa, size_t n, size_t base, size_t a, size_t b)
{
size_t t ;
if (!b) return (errno = EINVAL, 0) ;
t = n + base + a * n / b ;
if (t < n) return (errno = ERANGE, 0) ;
if (!sa->s)
{
sa->s = alloc(t) ;
if (!sa->s) return 0 ;
sa->a = t ;
}
else if (n > sa->a)
{
if (!alloc_re(&sa->s, sa->a, t)) return 0 ;
sa->a = t ;
}
return 1 ;
}
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