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/*
* Copyright (c) 2026 Faraz Vahedi <kfv@kfv.io>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <ctype.h>
#include <stdlib.h>
#include "strfrom.h"
int
strfromd(char * __restrict s, size_t n, const char * __restrict fmt, double fp)
{
char conv, lc, *digits, *dend;
int prec, decpt, signflag, ret, mode, ndig_req;
conv = __sf_parse_fmt(fmt, &prec);
if (conv == '\0')
return (__sf_edoofus(s, n));
lc = tolower((unsigned char)conv);
if (lc == 'a') {
digits = __hdtoa(fp, __sf_xdigits(conv),
prec >= 0 ? prec + 1 : -1, &decpt, &signflag, &dend);
ret = __sf_render_hex(s, n, conv, prec, digits, dend, decpt,
signflag);
freedtoa(digits);
return (ret);
}
if (prec < 0)
prec = 6;
__sf_decimal_mode(lc, prec, &mode, &ndig_req);
digits = dtoa(fp, mode, ndig_req, &decpt, &signflag, &dend);
ret = __sf_render_decimal(s, n, conv, lc, prec, digits, dend, decpt,
signflag, decpt == 9999);
freedtoa(digits);
return (ret);
}
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