/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8   -*-â
âvi: set et ft=c ts=8 tw=8 fenc=utf-8                                       :viâ
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ
â                                                                              â
â  The author of this software is David M. Gay.                                â
â  Please send bug reports to David M. Gay <dmg@acm.org>                       â
â                          or Justine Tunney <jtunney@gmail.com>               â
â                                                                              â
â  Copyright (C) 1998, 1999 by Lucent Technologies                             â
â  All Rights Reserved                                                         â
â                                                                              â
â  Permission to use, copy, modify, and distribute this software and           â
â  its documentation for any purpose and without fee is hereby                 â
â  granted, provided that the above copyright notice appear in all             â
â  copies and that both that the copyright notice and this                     â
â  permission notice and warranty disclaimer appear in supporting              â
â  documentation, and that the name of Lucent or any of its entities           â
â  not be used in advertising or publicity pertaining to                       â
â  distribution of the software without specific, written prior                â
â  permission.                                                                 â
â                                                                              â
â  LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,               â
â  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.            â
â  IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY           â
â  SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES                   â
â  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER             â
â  IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,              â
â  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF              â
â  THIS SOFTWARE.                                                              â
â                                                                              â
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ*/
#include "third_party/gdtoa/gdtoa.internal.h"
/* clang-format off */

extern ULong __gdtoa_NanDflt_f[1];

void
__gdtoa_ULtof(ULong *L, ULong *bits, Long exp, int k)
{
	switch(k & STRTOG_Retmask) {
	case STRTOG_NoNumber:
	case STRTOG_Zero:
		*L = 0;
		break;
	case STRTOG_Normal:
	case STRTOG_NaNbits:
		L[0] = (bits[0] & 0x7fffff) | ((exp + 0x7f + 23) << 23);
		break;
	case STRTOG_Denormal:
		L[0] = bits[0];
		break;
	case STRTOG_Infinite:
		L[0] = 0x7f800000;
		break;
	case STRTOG_NaN:
		L[0] = __gdtoa_NanDflt_f[0];
	}
	if (k & STRTOG_Neg)
		L[0] |= 0x80000000L;
}

int
strtorf(const char *s, char **sp, int rounding, float *f)
{
	static const FPI fpi0 = { 24, 1-127-24+1,  254-127-24+1, 1, SI, 0 /*unused*/ };
	FPI *fpi, fpi1;
	ULong bits[1];
	Long exp;
	int k;
	fpi = &fpi0;
	if (rounding != FPI_Round_near) {
		fpi1 = fpi0;
		fpi1.rounding = rounding;
		fpi = &fpi1;
	}
	k = strtodg(s, sp, fpi, &exp, bits);
	__gdtoa_ULtof((ULong*)f, bits, exp, k);
	return k;
}
