On 1/30/24 12:36 PM, Harald Anlauf wrote:
Hi Jerry,
Am 30.01.24 um 19:15 schrieb Jerry D:
The attached patch attempts to fix the handling of the EN0.0E0 and
ES0.0E0 formatting by correctly calculating the number of digits needed
for the exponents and building those exponents into the float string.
while your patch addresses ENw.dE0 and ESw.dE0 formatting,
it does not fix Ew.dE0, which can be seen with the following test:
write(buffer,"(E0.3E0)") .6660_4
print *, buffer
write(buffer,"(E0.3)") .6660_4
print *, buffer
I get even with your patch:
0.666
0.666
but would have expected:
0.666E+0 ! F2018 & F2023, table 13.1
0.666E+0 ! F2023, table 13.1
Tha attached file shows the complete revised patch and git log generated
by using the 'git show' command. I only just discovered that one. (eye
roll).
Regressions tested on x86-64. OK for trunk?
Regards,
Jerry
commit 95c878a97944f952aef226ff0224b2198abfbe0f
Author: Jerry DeLisle <jvdeli...@gcc.gnu.org>
Date: Fri Feb 2 18:12:33 2024 -0800
libgfortran: EN0.0E0 and ES0.0E0 format editing.
PR libgfortran/111022
F2018 and F2023 standards added zero width exponents. This required
additional special handing in the process of building formatted
floating point strings.
G formatting uses either F or E formatting as documented in
write_float.def comments. This logic changes the format token from FMT_G
to FMT_F or FMT_E. The new formatting requirements interfere with this
process when a FMT_G float string is being built. To avoid this, a new
component called 'pushed' is added to the fnode structure to save this
condition. The 'pushed' condition is then used to bypass portions of
the new ES,E,EN, and D formatting, falling through to the existing
default formatting which is retained.
libgfortran/ChangeLog:
* io/format.c (get_fnode): Update initialization of fnode.
(parse_format_list): Initialization.
* io/format.h (struct fnode): Added the new 'pushed' component.
* io/write.c (select_buffer): Whitespace.
(write_real): Whitespace.
(write_real_w0): Adjust logic for the d == 0 condition.
* io/write_float.def (determine_precision): Whitespace.
(build_float_string): Calculate width of ..E0 exponents and
adjust logic accordingly.
(build_infnan_string): Whitespace.
(CALCULATE_EXP): Whitespace.
(quadmath_snprintf): Whitespace.
(determine_en_precision): Whitespace.
gcc/testsuite/ChangeLog:
* gfortran.dg/fmt_error_10.f: Show D+0 exponent.
* gfortran.dg/pr96436_4.f90: Show E+0 exponent.
* gfortran.dg/pr96436_5.f90: Show E+0 exponent.
* gfortran.dg/pr111022.f90: New test.
diff --git a/gcc/testsuite/gfortran.dg/fmt_error_10.f b/gcc/testsuite/gfortran.dg/fmt_error_10.f
index 6e1a5f60bea..fc6620a60a6 100644
--- a/gcc/testsuite/gfortran.dg/fmt_error_10.f
+++ b/gcc/testsuite/gfortran.dg/fmt_error_10.f
@@ -18,7 +18,7 @@
str = '(1pd0.15)'
write (line,str,iostat=istat, iomsg=msg) 1.0d0
- if (line.ne."1.000000000000000") STOP 5
+ if (line.ne."1.000000000000000D+0") STOP 5
read (*,str,iostat=istat, iomsg=msg) x
if (istat.ne.5006 .or. msg(1:10).ne."Zero width") STOP 6
if (x.ne.555.25) STOP 7
diff --git a/gcc/testsuite/gfortran.dg/pr111022.f90 b/gcc/testsuite/gfortran.dg/pr111022.f90
new file mode 100644
index 00000000000..eef55ff5ce0
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr111022.f90
@@ -0,0 +1,72 @@
+! { dg-do run }
+program pr111022
+ character(20) :: buffer
+ write(buffer,"(EN0.3E0)") .6660_4
+ if (buffer.ne."666.000E-3") stop 1
+ write(buffer,"(EN0.3E0)") 6.660_4
+ if (buffer.ne."6.660E+0") stop 2
+ write(buffer,"(EN0.3E0)") 66.60_4
+ if (buffer.ne."66.600E+0") stop 3
+ write(buffer,"(EN0.3E0)") 666.0_4
+ if (buffer.ne."666.000E+0") stop 4
+ write(buffer,"(EN0.3E0)") 6660.0_4
+ if (buffer.ne."6.660E+3") stop 5
+ write(buffer,"(EN0.3E0)") 66600.0_4
+ if (buffer.ne."66.600E+3") stop 6
+
+ write(buffer,"(EN0.0E0)") 666.0_4
+ if (buffer.ne."666.E+0") stop 7
+ write(buffer,"(EN0.0E1)") 666.0_4
+ if (buffer.ne."666.E+0") stop 8
+ write(buffer,"(EN0.0E2)") 666.0_4
+ if (buffer.ne."666.E+00") stop 9
+ write(buffer,"(EN0.0E3)") 666.0_4
+ if (buffer.ne."666.E+000") stop 10
+ write(buffer,"(EN0.0E4)") 666.0_4
+ if (buffer.ne."666.E+0000") stop 11
+ write(buffer,"(EN0.0E5)") 666.0_4
+ if (buffer.ne."666.E+00000") stop 12
+ write(buffer,"(EN0.0E6)") 666.0_4
+ if (buffer.ne."666.E+000000") stop 13
+
+ write(buffer,"(ES0.3E0)") .6660_4
+ if (buffer.ne."6.660E-1") stop 14
+ write(buffer,"(ES0.3E0)") 6.660_4
+ if (buffer.ne."6.660E+0") stop 15
+ write(buffer,"(ES0.3E0)") 66.60_4
+ if (buffer.ne."6.660E+1") stop 16
+ write(buffer,"(ES0.3E0)") 666.0_4
+ if (buffer.ne."6.660E+2") stop 17
+ write(buffer,"(ES0.3E0)") 6660.0_4
+ if (buffer.ne."6.660E+3") stop 18
+ write(buffer,"(ES0.3E0)") 66600.0_4
+ if (buffer.ne."6.660E+4") stop 19
+
+ write(buffer,"(ES0.0E0)") 666.0_4
+ if (buffer.ne."7.E+2") stop 20
+ write(buffer,"(ES0.0E1)") 666.0_4
+ if (buffer.ne."7.E+2") stop 21
+ write(buffer,"(ES0.0E2)") 666.0_4
+ if (buffer.ne."7.E+02") stop 22
+ write(buffer,"(ES0.0E3)") 666.0_4
+ if (buffer.ne."7.E+002") stop 23
+ write(buffer,"(ES0.0E4)") 666.0_4
+ if (buffer.ne."7.E+0002") stop 24
+ write(buffer,"(ES0.0E5)") 666.0_4
+ if (buffer.ne."7.E+00002") stop 25
+ write(buffer,"(ES0.0E6)") 666.0_4
+ if (buffer.ne."7.E+000002") stop 26
+
+ write(buffer,"(E0.3E0)") .6660_4
+ if (buffer.ne."0.666E+0") stop 27
+ write(buffer,"(E0.3)") .6660_4
+ if (buffer.ne."0.666E+0") stop 28
+ write(buffer,"(E0.1E0)") .6660_4
+ if (buffer.ne."0.7E+0") stop 29
+ write(buffer,"(E0.1)") .6660_4
+ if (buffer.ne."0.7E+0") stop 30
+ write(buffer,"(E0.5E0)") .6660_4
+ if (buffer.ne."0.66600E+0") stop 31
+ write(buffer,"(E0.5)") .6660_4
+ if (buffer.ne."0.66600E+0") stop 32
+end program pr111022
diff --git a/gcc/testsuite/gfortran.dg/pr96436_4.f90 b/gcc/testsuite/gfortran.dg/pr96436_4.f90
index 335ce5fb009..7d2cfef0ef8 100644
--- a/gcc/testsuite/gfortran.dg/pr96436_4.f90
+++ b/gcc/testsuite/gfortran.dg/pr96436_4.f90
@@ -17,9 +17,9 @@ write(buffer,fmt) ">", 3.0, "<"
if (buffer.ne.">0.30E+1<") stop 4
fmt = "(1a1,en0.2,1a1)"
write(buffer,fmt) ">", 3.0, "<"
-if (buffer.ne.">3.00<") stop 5
+if (buffer.ne.">3.00E+0<") stop 5
fmt = "(1a1,es0.2,1a1)"
write(buffer,fmt) ">", 3.0, "<"
-if (buffer.ne.">3.00<") stop 6
+if (buffer.ne.">3.00E+0<") stop 6
end
diff --git a/gcc/testsuite/gfortran.dg/pr96436_5.f90 b/gcc/testsuite/gfortran.dg/pr96436_5.f90
index a45df8963c8..3870d988f97 100644
--- a/gcc/testsuite/gfortran.dg/pr96436_5.f90
+++ b/gcc/testsuite/gfortran.dg/pr96436_5.f90
@@ -17,9 +17,9 @@ write(buffer,fmt) ">", 3.0, "<"
if (buffer.ne.">0.30E+1<") stop 4
fmt = "(1a1,en0.2,1a1)"
write(buffer,fmt) ">", 3.0, "<"
-if (buffer.ne.">3.00<") stop 5
+if (buffer.ne.">3.00E+0<") stop 5
fmt = "(1a1,es0.2,1a1)"
write(buffer,fmt) ">", 3.0, "<"
-if (buffer.ne.">3.00<") stop 6
+if (buffer.ne.">3.00E+0<") stop 6
end
diff --git a/libgfortran/io/format.c b/libgfortran/io/format.c
index ac92acc175c..f39d6ecc65b 100644
--- a/libgfortran/io/format.c
+++ b/libgfortran/io/format.c
@@ -32,7 +32,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#include <string.h>
-static const fnode colon_node = { FMT_COLON, 0, NULL, NULL, {{ 0, 0, 0 }}, 0,
+static const fnode colon_node = { FMT_COLON, FMT_NONE, 0, NULL, NULL, {{ 0, 0, 0 }}, 0,
NULL };
/* Error messages. */
@@ -225,6 +225,7 @@ get_fnode (format_data *fmt, fnode **head, fnode **tail, format_token t)
}
f = fmt->avail++;
memset (f, '\0', sizeof (fnode));
+ f->pushed = FMT_NONE;
if (*head == NULL)
*head = *tail = f;
@@ -922,6 +923,7 @@ parse_format_list (st_parameter_dt *dtp, bool *seen_dd)
*seen_dd = true;
get_fnode (fmt, &head, &tail, t);
tail->repeat = repeat;
+ tail->pushed = FMT_NONE;
u = format_lex (fmt);
diff --git a/libgfortran/io/format.h b/libgfortran/io/format.h
index 9e1e902b944..2d5ea7d4d2c 100644
--- a/libgfortran/io/format.h
+++ b/libgfortran/io/format.h
@@ -33,6 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
struct fnode
{
format_token format;
+ format_token pushed;
int repeat;
struct fnode *next;
char *source;
diff --git a/libgfortran/io/write.c b/libgfortran/io/write.c
index 49beaee4724..1a7c12345f9 100644
--- a/libgfortran/io/write.c
+++ b/libgfortran/io/write.c
@@ -1574,7 +1574,7 @@ select_buffer (st_parameter_dt *dtp, const fnode *f, int precision,
char *buf, size_t *size, int kind)
{
char *result;
-
+
/* The buffer needs at least one more byte to allow room for
normalizing and 1 to hold null terminator. */
*size = size_from_kind (dtp, f, kind) + precision + 1 + 1;
@@ -1757,7 +1757,7 @@ write_real (st_parameter_dt *dtp, const char *source, int kind)
/* Scratch buffer to hold final result. */
buffer = select_buffer (dtp, &f, precision, buf_stack, &buf_size, kind);
-
+
get_float_string (dtp, &f, source , kind, 1, buffer,
precision, buf_size, result, &flt_str_len);
write_float_string (dtp, result, flt_str_len);
@@ -1785,8 +1785,6 @@ write_real_w0 (st_parameter_dt *dtp, const char *source, int kind,
set_fnode_default (dtp, &ff, kind);
- if (f->u.real.d > 0)
- ff.u.real.d = f->u.real.d;
ff.format = f->format;
/* For FMT_G, Compensate for extra digits when using scale factor, d
@@ -1794,11 +1792,17 @@ write_real_w0 (st_parameter_dt *dtp, const char *source, int kind,
is used. */
if (f->format == FMT_G)
{
+ if (f->u.real.d > 0)
+ ff.u.real.d = f->u.real.d;
if (dtp->u.p.scale_factor > 0 && f->u.real.d == 0)
comp_d = 1;
else
comp_d = 0;
}
+ else
+ if (f->u.real.d >= 0)
+ ff.u.real.d = f->u.real.d;
+
if (f->u.real.e >= 0)
ff.u.real.e = f->u.real.e;
diff --git a/libgfortran/io/write_float.def b/libgfortran/io/write_float.def
index 1f843914563..2d68b1d353c 100644
--- a/libgfortran/io/write_float.def
+++ b/libgfortran/io/write_float.def
@@ -1,6 +1,6 @@
/* Copyright (C) 2007-2024 Free Software Foundation, Inc.
Contributed by Andy Vaught
- Write float code factoring to this file by Jerry DeLisle
+ Write float code factoring to this file by Jerry DeLisle
F2003 I/O support contributed by Jerry DeLisle
This file is part of the GNU Fortran runtime library (libgfortran).
@@ -89,8 +89,8 @@ determine_precision (st_parameter_dt * dtp, const fnode * f, int len)
/* If the scale factor has a large negative value, we must do our
own rounding? Use ROUND='NEAREST', which should be what snprintf
is using as well. */
- if (precision < 0 &&
- (dtp->u.p.current_unit->round_status == ROUND_UNSPECIFIED
+ if (precision < 0 &&
+ (dtp->u.p.current_unit->round_status == ROUND_UNSPECIFIED
|| dtp->u.p.current_unit->round_status == ROUND_PROCDEFINED))
dtp->u.p.current_unit->round_status = ROUND_NEAREST;
@@ -154,7 +154,7 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
internal_error (&dtp->common, "Unspecified precision");
sign = calculate_sign (dtp, sign_bit);
-
+
/* Calculate total number of digits. */
if (ft == FMT_F)
ndigits = nprinted - 2;
@@ -351,7 +351,7 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
let snprintf handle the rounding. On system claiming support
for IEEE 754, this ought to be round to nearest, ties to
even, corresponding to the Fortran ROUND='NEAREST'. */
- case ROUND_PROCDEFINED:
+ case ROUND_PROCDEFINED:
case ROUND_UNSPECIFIED:
case ROUND_ZERO: /* Do nothing and truncation occurs. */
goto skip;
@@ -409,9 +409,9 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
goto do_rnd;
}
goto skip;
-
+
do_rnd:
-
+
if (nbefore + nafter == 0)
/* Handle the case Fw.0 and value < 1.0 */
{
@@ -476,49 +476,71 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
skip:
- /* Calculate the format of the exponent field. */
- if (expchar && !(dtp->u.p.g0_no_blanks && e == 0))
+ /* Calculate the format of the exponent field. The number of exponent digits
+ required is needed to determine padding of the float string before the
+ expenent is written down. */
+ edigits = 0; // Assume there is no exponent character set.
+ if (expchar)
{
- edigits = 1;
- for (i = abs (e); i >= 10; i /= 10)
- edigits++;
-
- if (f->u.real.e < 0)
- {
- /* Width not specified. Must be no more than 3 digits. */
- if (e > 999 || e < -999)
- edigits = -1;
- else
+ switch (ft)
+ {
+ case FMT_D:
+ case FMT_E:
+ case FMT_EN:
+ case FMT_ES:
+ if (f->pushed == FMT_NONE)
{
- edigits = 4;
- if (e > 99 || e < -99)
- expchar = ' ';
+ if (f->u.real.e == 0 && e == 0)
+ {
+ edigits = 3;
+ break;
+ }
+ else if (f->u.real.e > 0)
+ edigits = f->u.real.e + 2;
}
- }
- else if (f->u.real.e == 0)
- {
- /* Zero width specified, no leading zeros in exponent */
- if (e > 999 || e < -999)
- edigits = 6;
- else if (e > 99 || e < -99)
- edigits = 5;
- else if (e > 9 || e < -9)
- edigits = 4;
- else
- edigits = 3;
- }
- else
- {
- /* Exponent width specified, check it is wide enough. */
- if (edigits > f->u.real.e)
- edigits = -1;
- else
- edigits = f->u.real.e + 2;
- }
- }
- else
- edigits = 0;
+ /* Fall through. */
+ default:
+ if (!(dtp->u.p.g0_no_blanks && e == 0))
+ {
+ edigits = 1;
+ for (i = abs (e); i >= 10; i /= 10)
+ edigits++;
+ if (f->u.real.e < 0)
+ {
+ /* Width not specified. Must be no more than 3 digits. */
+ if (e > 999 || e < -999)
+ edigits = -1;
+ else
+ {
+ edigits = 4;
+ if (e > 99 || e < -99)
+ expchar = ' ';
+ }
+ }
+ else if (f->u.real.e == 0)
+ {
+ /* Zero width specified, no leading zeros in exponent */
+ if (e > 999 || e < -999)
+ edigits = 6;
+ else if (e > 99 || e < -99)
+ edigits = 5;
+ else if (e > 9 || e < -9)
+ edigits = 4;
+ else
+ edigits = 3;
+ }
+ else
+ {
+ /* Exponent width specified, check it is wide enough. */
+ if (edigits > f->u.real.e)
+ edigits = -1;
+ else
+ edigits = f->u.real.e + 2;
+ }
+ }
+ }
+ }
/* Scan the digits string and count the number of zeros. If we make it
all the way through the loop, we know the value is zero after the
rounding completed above. */
@@ -631,7 +653,7 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
/* Set the decimal point. */
*(put++) = dtp->u.p.current_unit->decimal_status == DECIMAL_POINT ? '.' : ',';
if (ft == FMT_F
- && (dtp->u.p.current_unit->round_status == ROUND_UNSPECIFIED
+ && (dtp->u.p.current_unit->round_status == ROUND_UNSPECIFIED
|| dtp->u.p.current_unit->round_status == ROUND_PROCDEFINED))
digits++;
@@ -661,16 +683,49 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
}
/* Set the exponent. */
- if (expchar && !(dtp->u.p.g0_no_blanks && e == 0))
+ if (expchar)
{
- if (expchar != ' ')
- {
- *(put++) = expchar;
- edigits--;
+ switch (ft)
+ {
+ case FMT_D:
+ case FMT_E:
+ case FMT_EN:
+ case FMT_ES:
+ if (f->pushed == FMT_NONE)
+ {
+ if ((f->u.real.e == 0) && (e == 0))
+ {
+ *(put++) = expchar;
+ edigits--;
+ snprintf (buffer, size, "%+0*d", edigits, e);
+ memcpy (put, buffer, edigits);
+ put += edigits;
+ break;
+ }
+ if (f->u.real.e > 0)
+ {
+ *(put++) = expchar;
+ edigits--;
+ snprintf (buffer, size, "%+0*d", edigits, e);
+ memcpy (put, buffer, edigits);
+ put += edigits;
+ break;
+ }
+ }
+ /* Fall through. */
+ default:
+ if (!(dtp->u.p.g0_no_blanks && e == 0))
+ {
+ if (expchar != ' ')
+ {
+ *(put++) = expchar;
+ edigits--;
+ }
+ snprintf (buffer, size, "%+0*d", edigits, e);
+ memcpy (put, buffer, edigits);
+ put += edigits;
+ }
}
- snprintf (buffer, size, "%+0*d", edigits, e);
- memcpy (put, buffer, edigits);
- put += edigits;
}
if (dtp->u.p.no_leading_blank)
@@ -688,7 +743,7 @@ build_float_string (st_parameter_dt *dtp, const fnode *f, char *buffer,
/* NULL terminate the string. */
*put = '\0';
-
+
return;
}
@@ -712,9 +767,9 @@ build_infnan_string (st_parameter_dt *dtp, const fnode *f, int isnan_flag,
nb = f->u.real.w;
*len = nb;
- /* If the field width is zero, the processor must select a width
+ /* If the field width is zero, the processor must select a width
not zero. 4 is chosen to allow output of '-Inf' or '+Inf' */
-
+
if ((nb == 0) || dtp->u.p.g0_no_blanks)
{
if (isnan_flag)
@@ -746,12 +801,12 @@ build_infnan_string (st_parameter_dt *dtp, const fnode *f, int isnan_flag,
}
/* The negative sign is mandatory */
fin = '-';
- }
+ }
else
/* The positive sign is optional, but we output it for
consistency */
fin = '+';
-
+
if (nb > mark)
/* We have room, so output 'Infinity' */
memcpy(p + nb - 8, "Infinity", 8);
@@ -809,7 +864,7 @@ CALCULATE_EXP(17)
/* Define macros to build code for format_float. */
/* Note: Before output_float is called, snprintf is used to print to buffer the
- number in the format +D.DDDDe+ddd.
+ number in the format +D.DDDDe+ddd.
# The result will always contain a decimal point, even if no
digits follow it
@@ -932,7 +987,7 @@ quadmath_snprintf (buffer, size, "%+-#.*Qf", (prec), (val))
10.0**e even when the final result will not be rounded to 10.0**e.
For these values the exponent returned by atoi has to be decremented
by one. The values y in the ranges
- (1000.0-0.5*10.0**(-d))*10.0**(3*n) <= y < 10.0*(3*(n+1))
+ (1000.0-0.5*10.0**(-d))*10.0**(3*n) <= y < 10.0*(3*(n+1))
(100.0-0.5*10.0**(-d))*10.0**(3*n) <= y < 10.0*(3*n+2)
(10.0-0.5*10.0**(-d))*10.0**(3*n) <= y < 10.0*(3*n+1)
are correctly rounded respectively to 1.0...0*10.0*(3*(n+1)),
@@ -962,7 +1017,7 @@ quadmath_snprintf (buffer, size, "%+-#.*Qf", (prec), (val))
}\
static int
-determine_en_precision (st_parameter_dt *dtp, const fnode *f,
+determine_en_precision (st_parameter_dt *dtp, const fnode *f,
const char *source, int len)
{
int nprinted;
@@ -1012,7 +1067,7 @@ determine_en_precision (st_parameter_dt *dtp, const fnode *f,
prec += 2 * len + 4;
return prec;
}
-
+
/* Generate corresponding I/O format. and output.
The rules to translate FMT_G to FMT_E or FMT_F from DEC fortran
@@ -1045,12 +1100,12 @@ determine_en_precision (st_parameter_dt *dtp, const fnode *f,
}\
m = sign_bit ? -m : m;\
zero_flag = (m == 0.0);\
+ fnode newf;\
+ int e = f->u.real.e;\
+ int d = f->u.real.d;\
+ int w = f->u.real.w;\
if (f->format == FMT_G)\
{\
- int e = f->u.real.e;\
- int d = f->u.real.d;\
- int w = f->u.real.w;\
- fnode newf;\
GFC_REAL_ ## x exp_d, r = 0.5, r_sc;\
int low, high, mid;\
int ubound, lbound;\
@@ -1140,6 +1195,7 @@ determine_en_precision (st_parameter_dt *dtp, const fnode *f,
precision = determine_precision (dtp, &newf, x);\
nprinted = FDTOA(y,precision,m);\
}\
+ newf.pushed = FMT_G;\
build_float_string (dtp, &newf, buffer, size, nprinted, precision,\
sign_bit, zero_flag, npad, default_width,\
result, res_len);\
@@ -1147,11 +1203,16 @@ determine_en_precision (st_parameter_dt *dtp, const fnode *f,
}\
else\
{\
+ newf.format = f->format;\
+ newf.u.real.w = w;\
+ newf.u.real.d = d;\
+ newf.u.real.e = e;\
+ newf.pushed = FMT_NONE;\
if (f->format == FMT_F)\
nprinted = FDTOA(y,precision,m);\
else\
nprinted = DTOA(y,precision,m);\
- build_float_string (dtp, f, buffer, size, nprinted, precision,\
+ build_float_string (dtp, &newf, buffer, size, nprinted, precision,\
sign_bit, zero_flag, npad, default_width,\
result, res_len);\
}\
