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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/gdtoa/hdtoa.c	Lines:	0	97	0.0 %
Date:	2017-11-07	Branches:	0	80	0.0 %


/*	$OpenBSD: hdtoa.c,v 1.3 2015/09/14 12:49:33 guenther Exp $	*/
/*-
 * Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.ORG>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <machine/ieee.h>
#include <float.h>
#include <limits.h>
#include <math.h>

#include "gdtoaimp.h"

/* Strings values used by dtoa() */
#define	INFSTR	"Infinity"
#define	NANSTR	"NaN"

#define	DBL_ADJ		(DBL_MAX_EXP - 2 + ((DBL_MANT_DIG - 1) % 4))
#define	LDBL_ADJ	(LDBL_MAX_EXP - 2 + ((LDBL_MANT_DIG - 1) % 4))

/*
 * Round up the given digit string.  If the digit string is fff...f,
 * this procedure sets it to 100...0 and returns 1 to indicate that
 * the exponent needs to be bumped.  Otherwise, 0 is returned.
 */
static int
roundup(char *s0, int ndigits)
{
	char *s;

	for (s = s0 + ndigits - 1; *s == 0xf; s--) {
		if (s == s0) {
			*s = 1;
			return (1);
		}
		*s = 0;
	}
	++*s;
	return (0);
}

/*
 * Round the given digit string to ndigits digits according to the
 * current rounding mode.  Note that this could produce a string whose
 * value is not representable in the corresponding floating-point
 * type.  The exponent pointed to by decpt is adjusted if necessary.
 */
static void
dorounding(char *s0, int ndigits, int sign, int *decpt)
{
	int adjust = 0;	/* do we need to adjust the exponent? */

	switch (FLT_ROUNDS) {
	case 0:		/* toward zero */
	default:	/* implementation-defined */
		break;
	case 1:		/* to nearest, halfway rounds to even */
		if ((s0[ndigits] > 8) ||
		    (s0[ndigits] == 8 && s0[ndigits + 1] & 1))
			adjust = roundup(s0, ndigits);
		break;
	case 2:		/* toward +inf */
		if (sign == 0)
			adjust = roundup(s0, ndigits);
		break;
	case 3:		/* toward -inf */
		if (sign != 0)
			adjust = roundup(s0, ndigits);
		break;
	}

	if (adjust)
		*decpt += 4;
}

/*
 * This procedure converts a double-precision number in IEEE format
 * into a string of hexadecimal digits and an exponent of 2.  Its
 * behavior is bug-for-bug compatible with dtoa() in mode 2, with the
 * following exceptions:
 *
 * - An ndigits < 0 causes it to use as many digits as necessary to
 *   represent the number exactly.
 * - The additional xdigs argument should point to either the string
 *   "0123456789ABCDEF" or the string "0123456789abcdef", depending on
 *   which case is desired.
 * - This routine does not repeat dtoa's mistake of setting decpt
 *   to 9999 in the case of an infinity or NaN.  INT_MAX is used
 *   for this purpose instead.
 *
 * Note that the C99 standard does not specify what the leading digit
 * should be for non-zero numbers.  For instance, 0x1.3p3 is the same
 * as 0x2.6p2 is the same as 0x4.cp3.  This implementation chooses the
 * first digit so that subsequent digits are aligned on nibble
 * boundaries (before rounding).
 *
 * Inputs:	d, xdigs, ndigits
 * Outputs:	decpt, sign, rve
 */
char *
__hdtoa(double d, const char *xdigs, int ndigits, int *decpt, int *sign,
    char **rve)
{
	static const int sigfigs = (DBL_MANT_DIG + 3) / 4;
	struct ieee_double *p = (struct ieee_double *)&d;
	char *s, *s0;
	int bufsize;

	*sign = p->dbl_sign;

	switch (fpclassify(d)) {
	case FP_NORMAL:
		*decpt = p->dbl_exp - DBL_ADJ;
		break;
	case FP_ZERO:
		*decpt = 1;
		return (nrv_alloc("0", rve, 1));
	case FP_SUBNORMAL:
		d *= 0x1p514;
		*decpt = p->dbl_exp - (514 + DBL_ADJ);
		break;
	case FP_INFINITE:
		*decpt = INT_MAX;
		return (nrv_alloc(INFSTR, rve, sizeof(INFSTR) - 1));
	case FP_NAN:
		*decpt = INT_MAX;
		return (nrv_alloc(NANSTR, rve, sizeof(NANSTR) - 1));
	default:
		abort();
	}

	/* FP_NORMAL or FP_SUBNORMAL */

	if (ndigits == 0)		/* dtoa() compatibility */
		ndigits = 1;

	/*
	 * For simplicity, we generate all the digits even if the
	 * caller has requested fewer.
	 */
	bufsize = (sigfigs > ndigits) ? sigfigs : ndigits;
	s0 = rv_alloc(bufsize);
	if (s0 == NULL)
		return (NULL);

	/*
	 * We work from right to left, first adding any requested zero
	 * padding, then the least significant portion of the
	 * mantissa, followed by the most significant.  The buffer is
	 * filled with the byte values 0x0 through 0xf, which are
	 * converted to xdigs[0x0] through xdigs[0xf] after the
	 * rounding phase.
	 */
	for (s = s0 + bufsize - 1; s > s0 + sigfigs - 1; s--)
		*s = 0;
	for (; s > s0 + sigfigs - (DBL_FRACLBITS / 4) - 1 && s > s0; s--) {
		*s = p->dbl_fracl & 0xf;
		p->dbl_fracl >>= 4;
	}
	for (; s > s0; s--) {
		*s = p->dbl_frach & 0xf;
		p->dbl_frach >>= 4;
	}

	/*
	 * At this point, we have snarfed all the bits in the
	 * mantissa, with the possible exception of the highest-order
	 * (partial) nibble, which is dealt with by the next
	 * statement.  We also tack on the implicit normalization bit.
	 */
	*s = p->dbl_frach | (1U << ((DBL_MANT_DIG - 1) % 4));

	/* If ndigits < 0, we are expected to auto-size the precision. */
	if (ndigits < 0) {
		for (ndigits = sigfigs; s0[ndigits - 1] == 0; ndigits--)
			;
	}

	if (sigfigs > ndigits && s0[ndigits] != 0)
		dorounding(s0, ndigits, p->dbl_sign, decpt);

	s = s0 + ndigits;
	if (rve != NULL)
		*rve = s;
	*s-- = '\0';
	for (; s >= s0; s--)
		*s = xdigs[(unsigned int)*s];

	return (s0);
}
DEF_STRONG(__hdtoa);

#if (LDBL_MANT_DIG > DBL_MANT_DIG)

/*
 * This is the long double version of __hdtoa().
 */
char *
__hldtoa(long double e, const char *xdigs, int ndigits, int *decpt, int *sign,
    char **rve)
{
	static const int sigfigs = (LDBL_MANT_DIG + 3) / 4;
	struct ieee_ext *p = (struct ieee_ext *)&e;
	char *s, *s0;
	int bufsize;

	*sign = p->ext_sign;

	switch (fpclassify(e)) {
	case FP_NORMAL:
		*decpt = p->ext_exp - LDBL_ADJ;
		break;
	case FP_ZERO:
		*decpt = 1;
		return (nrv_alloc("0", rve, 1));
	case FP_SUBNORMAL:
		e *= 0x1p514L;
		*decpt = p->ext_exp - (514 + LDBL_ADJ);
		break;
	case FP_INFINITE:
		*decpt = INT_MAX;
		return (nrv_alloc(INFSTR, rve, sizeof(INFSTR) - 1));
	case FP_NAN:
		*decpt = INT_MAX;
		return (nrv_alloc(NANSTR, rve, sizeof(NANSTR) - 1));
	default:
		abort();
	}

	/* FP_NORMAL or FP_SUBNORMAL */

	if (ndigits == 0)		/* dtoa() compatibility */
		ndigits = 1;

	/*
	 * For simplicity, we generate all the digits even if the
	 * caller has requested fewer.
	 */
	bufsize = (sigfigs > ndigits) ? sigfigs : ndigits;
	s0 = rv_alloc(bufsize);
	if (s0 == NULL)
		return (NULL);

	/*
	 * We work from right to left, first adding any requested zero
	 * padding, then the least significant portion of the
	 * mantissa, followed by the most significant.  The buffer is
	 * filled with the byte values 0x0 through 0xf, which are
	 * converted to xdigs[0x0] through xdigs[0xf] after the
	 * rounding phase.
	 */
	for (s = s0 + bufsize - 1; s > s0 + sigfigs - 1; s--)
		*s = 0;
	for (; s > s0 + sigfigs - (EXT_FRACLBITS / 4) - 1 && s > s0; s--) {
		*s = p->ext_fracl & 0xf;
		p->ext_fracl >>= 4;
	}
#ifdef EXT_FRACHMBITS
	for (; s > s0; s--) {
		*s = p->ext_frachm & 0xf;
		p->ext_frachm >>= 4;
	}
#endif
#ifdef EXT_FRACLMBITS
	for (; s > s0; s--) {
		*s = p->ext_fraclm & 0xf;
		p->ext_fraclm >>= 4;
	}
#endif
	for (; s > s0; s--) {
		*s = p->ext_frach & 0xf;
		p->ext_frach >>= 4;
	}

	/*
	 * At this point, we have snarfed all the bits in the
	 * mantissa, with the possible exception of the highest-order
	 * (partial) nibble, which is dealt with by the next
	 * statement.  We also tack on the implicit normalization bit.
	 */
	*s = p->ext_frach | (1U << ((LDBL_MANT_DIG - 1) % 4));

	/* If ndigits < 0, we are expected to auto-size the precision. */
	if (ndigits < 0) {
		for (ndigits = sigfigs; s0[ndigits - 1] == 0; ndigits--)
			;
	}

	if (sigfigs > ndigits && s0[ndigits] != 0)
		dorounding(s0, ndigits, p->ext_sign, decpt);

	s = s0 + ndigits;
	if (rve != NULL)
		*rve = s;
	*s-- = '\0';
	for (; s >= s0; s--)
		*s = xdigs[(unsigned int)*s];

	return (s0);
}
DEF_STRONG(__hldtoa);

#else	/* (LDBL_MANT_DIG == DBL_MANT_DIG) */

char *
__hldtoa(long double e, const char *xdigs, int ndigits, int *decpt, int *sign,
    char **rve)
{
	return (__hdtoa((double)e, xdigs, ndigits, decpt, sign, rve));
}
DEF_STRONG(__hldtoa);

#endif	/* (LDBL_MANT_DIG == DBL_MANT_DIG) */


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: hdtoa.c,v 1.3 2015/09/14 12:49:33 guenther Exp $ */
2			/*-
3			* Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.ORG>
4			* All rights reserved.
5			*
6			* Redistribution and use in source and binary forms, with or without
7			* modification, are permitted provided that the following conditions
8			* are met:
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			* 2. Redistributions in binary form must reproduce the above copyright
12			* notice, this list of conditions and the following disclaimer in the
13			* documentation and/or other materials provided with the distribution.
14			*
15			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25			* SUCH DAMAGE.
26			*/
27
28			#include <sys/types.h>
29			#include <machine/ieee.h>
30			#include <float.h>
31			#include <limits.h>
32			#include <math.h>
33
34			#include "gdtoaimp.h"
35
36			/* Strings values used by dtoa() */
37			#define INFSTR "Infinity"
38			#define NANSTR "NaN"
39
40			#define DBL_ADJ (DBL_MAX_EXP - 2 + ((DBL_MANT_DIG - 1) % 4))
41			#define LDBL_ADJ (LDBL_MAX_EXP - 2 + ((LDBL_MANT_DIG - 1) % 4))
42
43			/*
44			* Round up the given digit string. If the digit string is fff...f,
45			* this procedure sets it to 100...0 and returns 1 to indicate that
46			* the exponent needs to be bumped. Otherwise, 0 is returned.
47			*/
48			static int
49			roundup(char *s0, int ndigits)
50			{
51			char *s;
52
53			for (s = s0 + ndigits - 1; *s == 0xf; s--) {
54			if (s == s0) {
55			*s = 1;
56			return (1);
57			}
58			*s = 0;
59			}
60			++*s;
61			return (0);
62			}
63
64			/*
65			* Round the given digit string to ndigits digits according to the
66			* current rounding mode. Note that this could produce a string whose
67			* value is not representable in the corresponding floating-point
68			* type. The exponent pointed to by decpt is adjusted if necessary.
69			*/
70			static void
71			dorounding(char s0, int ndigits, int sign, int decpt)
72			{
73			int adjust = 0; /* do we need to adjust the exponent? */
74
75			switch (FLT_ROUNDS) {
76			case 0: /* toward zero */
77			default: /* implementation-defined */
78			break;
79			case 1: /* to nearest, halfway rounds to even */
80			if ((s0[ndigits] > 8) \|\|
81			(s0[ndigits] == 8 && s0[ndigits + 1] & 1))
82			adjust = roundup(s0, ndigits);
83			break;
84			case 2: /* toward +inf */
85			if (sign == 0)
86			adjust = roundup(s0, ndigits);
87			break;
88			case 3: /* toward -inf */
89			if (sign != 0)
90			adjust = roundup(s0, ndigits);
91			break;
92			}
93
94			if (adjust)
95			*decpt += 4;
96			}
97
98			/*
99			* This procedure converts a double-precision number in IEEE format
100			* into a string of hexadecimal digits and an exponent of 2. Its
101			* behavior is bug-for-bug compatible with dtoa() in mode 2, with the
102			* following exceptions:
103			*
104			* - An ndigits < 0 causes it to use as many digits as necessary to
105			* represent the number exactly.
106			* - The additional xdigs argument should point to either the string
107			* "0123456789ABCDEF" or the string "0123456789abcdef", depending on
108			* which case is desired.
109			* - This routine does not repeat dtoa's mistake of setting decpt
110			* to 9999 in the case of an infinity or NaN. INT_MAX is used
111			* for this purpose instead.
112			*
113			* Note that the C99 standard does not specify what the leading digit
114			* should be for non-zero numbers. For instance, 0x1.3p3 is the same
115			* as 0x2.6p2 is the same as 0x4.cp3. This implementation chooses the
116			* first digit so that subsequent digits are aligned on nibble
117			* boundaries (before rounding).
118			*
119			* Inputs: d, xdigs, ndigits
120			* Outputs: decpt, sign, rve
121			*/
122			char *
123			__hdtoa(double d, const char xdigs, int ndigits, int decpt, int *sign,
124			char **rve)
125			{
126			static const int sigfigs = (DBL_MANT_DIG + 3) / 4;
127			struct ieee_double p = (struct ieee_double )&d;
128			char s, s0;
129			int bufsize;
130
131			*sign = p->dbl_sign;
132
133			switch (fpclassify(d)) {
134			case FP_NORMAL:
135			*decpt = p->dbl_exp - DBL_ADJ;
136			break;
137			case FP_ZERO:
138			*decpt = 1;
139			return (nrv_alloc("0", rve, 1));
140			case FP_SUBNORMAL:
141			d *= 0x1p514;
142			*decpt = p->dbl_exp - (514 + DBL_ADJ);
143			break;
144			case FP_INFINITE:
145			*decpt = INT_MAX;
146			return (nrv_alloc(INFSTR, rve, sizeof(INFSTR) - 1));
147			case FP_NAN:
148			*decpt = INT_MAX;
149			return (nrv_alloc(NANSTR, rve, sizeof(NANSTR) - 1));
150			default:
151			abort();
152			}
153
154			/* FP_NORMAL or FP_SUBNORMAL */
155
156			if (ndigits == 0) /* dtoa() compatibility */
157			ndigits = 1;
158
159			/*
160			* For simplicity, we generate all the digits even if the
161			* caller has requested fewer.
162			*/
163			bufsize = (sigfigs > ndigits) ? sigfigs : ndigits;
164			s0 = rv_alloc(bufsize);
165			if (s0 == NULL)
166			return (NULL);
167
168			/*
169			* We work from right to left, first adding any requested zero
170			* padding, then the least significant portion of the
171			* mantissa, followed by the most significant. The buffer is
172			* filled with the byte values 0x0 through 0xf, which are
173			* converted to xdigs[0x0] through xdigs[0xf] after the
174			* rounding phase.
175			*/
176			for (s = s0 + bufsize - 1; s > s0 + sigfigs - 1; s--)
177			*s = 0;
178			for (; s > s0 + sigfigs - (DBL_FRACLBITS / 4) - 1 && s > s0; s--) {
179			*s = p->dbl_fracl & 0xf;
180			p->dbl_fracl >>= 4;
181			}
182			for (; s > s0; s--) {
183			*s = p->dbl_frach & 0xf;
184			p->dbl_frach >>= 4;
185			}
186
187			/*
188			* At this point, we have snarfed all the bits in the
189			* mantissa, with the possible exception of the highest-order
190			* (partial) nibble, which is dealt with by the next
191			* statement. We also tack on the implicit normalization bit.
192			*/
193			*s = p->dbl_frach \| (1U << ((DBL_MANT_DIG - 1) % 4));
194
195			/* If ndigits < 0, we are expected to auto-size the precision. */
196			if (ndigits < 0) {
197			for (ndigits = sigfigs; s0[ndigits - 1] == 0; ndigits--)
198			;
199			}
200
201			if (sigfigs > ndigits && s0[ndigits] != 0)
202			dorounding(s0, ndigits, p->dbl_sign, decpt);
203
204			s = s0 + ndigits;
205			if (rve != NULL)
206			*rve = s;
207			*s-- = '\0';
208			for (; s >= s0; s--)
209			s = xdigs[(unsigned int)s];
210
211			return (s0);
212			}
213			DEF_STRONG(__hdtoa);
214
215			#if (LDBL_MANT_DIG > DBL_MANT_DIG)
216
217			/*
218			* This is the long double version of __hdtoa().
219			*/
220			char *
221			__hldtoa(long double e, const char xdigs, int ndigits, int decpt, int *sign,
222			char **rve)
223			{
224			static const int sigfigs = (LDBL_MANT_DIG + 3) / 4;
225			struct ieee_ext p = (struct ieee_ext )&e;
226			char s, s0;
227			int bufsize;
228
229			*sign = p->ext_sign;
230
231			switch (fpclassify(e)) {
232			case FP_NORMAL:
233			*decpt = p->ext_exp - LDBL_ADJ;
234			break;
235			case FP_ZERO:
236			*decpt = 1;
237			return (nrv_alloc("0", rve, 1));
238			case FP_SUBNORMAL:
239			e *= 0x1p514L;
240			*decpt = p->ext_exp - (514 + LDBL_ADJ);
241			break;
242			case FP_INFINITE:
243			*decpt = INT_MAX;
244			return (nrv_alloc(INFSTR, rve, sizeof(INFSTR) - 1));
245			case FP_NAN:
246			*decpt = INT_MAX;
247			return (nrv_alloc(NANSTR, rve, sizeof(NANSTR) - 1));
248			default:
249			abort();
250			}
251
252			/* FP_NORMAL or FP_SUBNORMAL */
253
254			if (ndigits == 0) /* dtoa() compatibility */
255			ndigits = 1;
256
257			/*
258			* For simplicity, we generate all the digits even if the
259			* caller has requested fewer.
260			*/
261			bufsize = (sigfigs > ndigits) ? sigfigs : ndigits;
262			s0 = rv_alloc(bufsize);
263			if (s0 == NULL)
264			return (NULL);
265
266			/*
267			* We work from right to left, first adding any requested zero
268			* padding, then the least significant portion of the
269			* mantissa, followed by the most significant. The buffer is
270			* filled with the byte values 0x0 through 0xf, which are
271			* converted to xdigs[0x0] through xdigs[0xf] after the
272			* rounding phase.
273			*/
274			for (s = s0 + bufsize - 1; s > s0 + sigfigs - 1; s--)
275			*s = 0;
276			for (; s > s0 + sigfigs - (EXT_FRACLBITS / 4) - 1 && s > s0; s--) {
277			*s = p->ext_fracl & 0xf;
278			p->ext_fracl >>= 4;
279			}
280			#ifdef EXT_FRACHMBITS
281			for (; s > s0; s--) {
282			*s = p->ext_frachm & 0xf;
283			p->ext_frachm >>= 4;
284			}
285			#endif
286			#ifdef EXT_FRACLMBITS
287			for (; s > s0; s--) {
288			*s = p->ext_fraclm & 0xf;
289			p->ext_fraclm >>= 4;
290			}
291			#endif
292			for (; s > s0; s--) {
293			*s = p->ext_frach & 0xf;
294			p->ext_frach >>= 4;
295			}
296
297			/*
298			* At this point, we have snarfed all the bits in the
299			* mantissa, with the possible exception of the highest-order
300			* (partial) nibble, which is dealt with by the next
301			* statement. We also tack on the implicit normalization bit.
302			*/
303			*s = p->ext_frach \| (1U << ((LDBL_MANT_DIG - 1) % 4));
304
305			/* If ndigits < 0, we are expected to auto-size the precision. */
306			if (ndigits < 0) {
307			for (ndigits = sigfigs; s0[ndigits - 1] == 0; ndigits--)
308			;
309			}
310
311			if (sigfigs > ndigits && s0[ndigits] != 0)
312			dorounding(s0, ndigits, p->ext_sign, decpt);
313
314			s = s0 + ndigits;
315			if (rve != NULL)
316			*rve = s;
317			*s-- = '\0';
318			for (; s >= s0; s--)
319			s = xdigs[(unsigned int)s];
320
321			return (s0);
322			}
323			DEF_STRONG(__hldtoa);
324
325			#else /* (LDBL_MANT_DIG == DBL_MANT_DIG) */
326
327			char *
328			__hldtoa(long double e, const char xdigs, int ndigits, int decpt, int *sign,
329			char **rve)
330			{
331			return (__hdtoa((double)e, xdigs, ndigits, decpt, sign, rve));
332			}
333			DEF_STRONG(__hldtoa);
334
335			#endif /* (LDBL_MANT_DIG == DBL_MANT_DIG) */