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-rw-r--r--ChangeLog17
-rw-r--r--stdio/fpioconst.c36
-rw-r--r--stdlib/atof.c8
-rw-r--r--stdlib/atoi.c8
-rw-r--r--stdlib/atol.c8
-rw-r--r--stdlib/strtod.c46
-rw-r--r--stdlib/strtof.c1
-rw-r--r--stdlib/strtold.c1
8 files changed, 80 insertions, 45 deletions
diff --git a/ChangeLog b/ChangeLog
index 9bf5fcc23e..20a400dfbc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,20 @@
+Fri Mar 17 13:28:04 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
+
+ * sysdeps/ieee754/ldbl2mpn.c (__mpn_extract_long_double):
+ Handle 80-bit denormalized numbers correct.
+
+ * stdlib/strtod.c,stdlib/strtof.c,stdlib/strtold.c:
+ [IMPLICIT_ONE,*_MAX_10_EXP_LOG]: not needed anymore.
+ * stdlib/strtod.c (RETURN): parenthesis around return value.
+ (round_and_return): correct handling of denormalized numbers.
+ (__strtod_internal): don't check for grouping when not requested
+ while returning 0.0.
+
+ * stdio/fpioconst.[ch]: [LDBL_MAX_10_EXP_LOG]: don't use it.
+ LAST_POW10 defines the maximal available exponent.
+
+ * stdlib/{atof,atoi,atol}.c: use __strtoX_internal.
+
Thu Mar 16 00:04:41 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* locale/C-ctype.c: New correct data generated by drepper.
diff --git a/stdio/fpioconst.c b/stdio/fpioconst.c
index 231cae34ed..8d0a8233b0 100644
--- a/stdio/fpioconst.c
+++ b/stdio/fpioconst.c
@@ -196,7 +196,8 @@ static const mp_limb _ten_p12[] =
0xae7be4a2, 0x271133ee, 0xbb0fd922, 0x25254932, 0xa60a9fc0, 0x104bcd64,
0x30290145, 0x00000062 };
-#define LAST_POW10 12
+/* This value is the index of the last array element. */
+#define _LAST_POW10 12
#elif BITS_PER_MP_LIMB == 64
@@ -369,7 +370,8 @@ static const mp_limb _ten_p12[] =
0x271133eeae7be4a2, 0x25254932bb0fd922, 0x104bcd64a60a9fc0,
0x0000006230290145 };
-#define LAST_POW10 12
+/* This value is the index of the last array element. */
+#define _LAST_POW10 12
#else
# error "mp_limb size " BITS_PER_MP_LIMB "not accounted for"
@@ -379,23 +381,23 @@ static const mp_limb _ten_p12[] =
/* Each of array variable above defines one mpn integer which is a power of 10.
This table points to those variables, indexed by the exponent. */
-const struct mp_power _fpioconst_pow10[LDBL_MAX_10_EXP_LOG + 1] =
+const struct mp_power _fpioconst_pow10[_LAST_POW10 + 1] =
{
{ _ten_p0, sizeof (_ten_p0) / sizeof (_ten_p0[0]), 4, },
- { _ten_p1, sizeof (_ten_p1) / sizeof (_ten_p0[1]), 7, 4 },
- { _ten_p2, sizeof (_ten_p2) / sizeof (_ten_p0[2]), 14, 10 },
- { _ten_p3, sizeof (_ten_p3) / sizeof (_ten_p0[3]), 27, 24 },
- { _ten_p4, sizeof (_ten_p4) / sizeof (_ten_p0[4]), 54, 50 },
- { _ten_p5, sizeof (_ten_p5) / sizeof (_ten_p0[5]), 107, 103 },
- { _ten_p6, sizeof (_ten_p6) / sizeof (_ten_p0[6]), 213, 210 },
- { _ten_p7, sizeof (_ten_p7) / sizeof (_ten_p0[7]), 426, 422 },
- { _ten_p8, sizeof (_ten_p8) / sizeof (_ten_p0[8]), 851, 848 },
- { _ten_p9, sizeof (_ten_p9) / sizeof (_ten_p0[9]), 1701, 1698 },
- { _ten_p10, sizeof (_ten_p10) / sizeof (_ten_p0[10]), 3402, 3399 },
- { _ten_p11, sizeof (_ten_p11) / sizeof (_ten_p0[11]), 6804, 6800 },
- { _ten_p12, sizeof (_ten_p12) / sizeof (_ten_p0[12]), 13607, 13604 }
+ { _ten_p1, sizeof (_ten_p1) / sizeof (_ten_p1[0]), 7, 4 },
+ { _ten_p2, sizeof (_ten_p2) / sizeof (_ten_p2[0]), 14, 10 },
+ { _ten_p3, sizeof (_ten_p3) / sizeof (_ten_p3[0]), 27, 24 },
+ { _ten_p4, sizeof (_ten_p4) / sizeof (_ten_p4[0]), 54, 50 },
+ { _ten_p5, sizeof (_ten_p5) / sizeof (_ten_p5[0]), 107, 103 },
+ { _ten_p6, sizeof (_ten_p6) / sizeof (_ten_p6[0]), 213, 210 },
+ { _ten_p7, sizeof (_ten_p7) / sizeof (_ten_p7[0]), 426, 422 },
+ { _ten_p8, sizeof (_ten_p8) / sizeof (_ten_p8[0]), 851, 848 },
+ { _ten_p9, sizeof (_ten_p9) / sizeof (_ten_p9[0]), 1701, 1698 },
+ { _ten_p10, sizeof (_ten_p10) / sizeof (_ten_p10[0]), 3402, 3399 },
+ { _ten_p11, sizeof (_ten_p11) / sizeof (_ten_p11[0]), 6804, 6800 },
+ { _ten_p12, sizeof (_ten_p12) / sizeof (_ten_p12[0]), 13607, 13604 }
};
-#if LDBL_MAX_10_EXP_LOG > LAST_POW10
-#error "Need to expand 10^(2^i) table for i up to" LDBL_MAX_10_EXP_LOG
+#if LAST_POW10 > _LAST_POW10
+#error "Need to expand 10^(2^i) table for i up to" LAST_POW10
#endif
diff --git a/stdlib/atof.c b/stdlib/atof.c
index 79585464d1..a4b7eb92bd 100644
--- a/stdlib/atof.c
+++ b/stdlib/atof.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -16,7 +16,6 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
#include <stdlib.h>
#undef atof
@@ -24,7 +23,8 @@ Cambridge, MA 02139, USA. */
/* Convert a string to a double. */
double
-DEFUN(atof, (nptr), CONST char *nptr)
+atof (nptr)
+ const char *nptr;
{
- return(strtod(nptr, (char **) NULL));
+ return __strtod_internal (nptr, (char **) NULL, 0);
}
diff --git a/stdlib/atoi.c b/stdlib/atoi.c
index 9fe280cc3e..df053710f3 100644
--- a/stdlib/atoi.c
+++ b/stdlib/atoi.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -16,7 +16,6 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
#include <stdlib.h>
#undef atoi
@@ -24,7 +23,8 @@ Cambridge, MA 02139, USA. */
/* Convert a string to an int. */
int
-DEFUN(atoi, (nptr), CONST char *nptr)
+atoi (nptr)
+ const char *nptr;
{
- return((int) strtol(nptr, (char **) NULL, 10));
+ return (int) __strtol_internal (nptr, (char **) NULL, 10, 0);
}
diff --git a/stdlib/atol.c b/stdlib/atol.c
index 75f599c107..dd68ce0b74 100644
--- a/stdlib/atol.c
+++ b/stdlib/atol.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -16,7 +16,6 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
#include <stdlib.h>
#undef atol
@@ -24,7 +23,8 @@ Cambridge, MA 02139, USA. */
/* Convert a string to a long int. */
long int
-DEFUN(atol, (nptr), CONST char *nptr)
+atol (nptr)
+ const char *nptr;
{
- return(strtol(nptr, (char **) NULL, 10));
+ return __strtol_internal (nptr, (char **) NULL, 10, 0);
}
diff --git a/stdlib/strtod.c b/stdlib/strtod.c
index 8f71d136de..dcec00c5d7 100644
--- a/stdlib/strtod.c
+++ b/stdlib/strtod.c
@@ -27,7 +27,6 @@ Cambridge, MA 02139, USA. */
#define STRTOF strtod
#define MPN2FLOAT __mpn_construct_double
#define FLOAT_HUGE_VAL HUGE_VAL
-#define IMPLICIT_ONE 1
#endif
/* End of configuration part. */
@@ -54,7 +53,6 @@ Cambridge, MA 02139, USA. */
#define MIN_EXP PASTE(FLT,_MIN_EXP)
#define MAX_10_EXP PASTE(FLT,_MAX_10_EXP)
#define MIN_10_EXP PASTE(FLT,_MIN_10_EXP)
-#define MAX_10_EXP_LOG PASTE(FLT,_MAX_10_EXP_LOG)
/* Extra macros required to get FLT expanded before the pasting. */
#define PASTE(a,b) PASTE1(a,b)
@@ -102,7 +100,7 @@ static const mp_limb _tens_in_limb[MAX_DIG_PER_LIMB + 1] =
#define RETURN_LIMB_SIZE howmany (MANT_DIG, BITS_PER_MP_LIMB)
#define RETURN(val,end) \
- do { if (endptr != 0) *endptr = (char *) (end); return (val); } while (0)
+ do { if (endptr != 0) *endptr = (char *) (end); return val; } while (0)
/* Maximum size necessary for mpn integers to hold floating point numbers. */
#define MPNSIZE (howmany (MAX_EXP + 2 * MANT_DIG, BITS_PER_MP_LIMB) \
@@ -120,21 +118,38 @@ static inline FLOAT
round_and_return (mp_limb *retval, int exponent, int negative,
mp_limb round_limb, mp_size_t round_bit, int more_bits)
{
- if (exponent < MIN_EXP - 2 + IMPLICIT_ONE)
+ if (exponent < MIN_EXP - 1)
{
- mp_size_t shift = MIN_EXP - 2 + IMPLICIT_ONE - exponent;
+ mp_size_t shift = MIN_EXP - 1 - exponent;
- if (shift >= MANT_DIG)
+ if (shift > MANT_DIG)
{
errno = EDOM;
return 0.0;
}
more_bits |= (round_limb & ((1 << round_bit) - 1)) != 0;
- if (shift >= BITS_PER_MP_LIMB)
+ if (shift == MANT_DIG)
+ /* This is a special case to handle the very seldom case where
+ the mantissa will be empty after the shift. */
{
+ int i;
+
+ round_limb = retval[RETURN_LIMB_SIZE - 1];
+ round_bit = BITS_PER_MP_LIMB - 1;
+ for (i = 0; i < RETURN_LIMB_SIZE; ++i)
+ more_bits |= retval[i] != 0;
+ MPN_ZERO (retval, RETURN_LIMB_SIZE);
+ }
+ else if (shift >= BITS_PER_MP_LIMB)
+ {
+ int i;
+
round_limb = retval[(shift - 1) / BITS_PER_MP_LIMB];
round_bit = (shift - 1) % BITS_PER_MP_LIMB;
+ for (i = 0; i < (shift - 1) / BITS_PER_MP_LIMB; ++i)
+ more_bits |= retval[i] != 0;
+ more_bits |= (round_limb & ((1 << round_bit) - 1)) != 0;
(void) __mpn_rshift (retval, &retval[shift / BITS_PER_MP_LIMB],
RETURN_LIMB_SIZE - (shift / BITS_PER_MP_LIMB),
@@ -167,7 +182,7 @@ round_and_return (mp_limb *retval, int exponent, int negative,
retval[RETURN_LIMB_SIZE - 1] |= 1 << ((MANT_DIG - 1)
% BITS_PER_MP_LIMB);
}
- else if (IMPLICIT_ONE && exponent == MIN_EXP - 2
+ else if (exponent == MIN_EXP - 2
&& (retval[RETURN_LIMB_SIZE - 1]
& (1 << ((MANT_DIG - 1) % BITS_PER_MP_LIMB))) != 0)
/* The number was denormalized but now normalized. */
@@ -390,9 +405,13 @@ INTERNAL (STRTOF) (nptr, endptr, group)
Return current read pointer. */
if (!isdigit (c) && c != decimal)
{
- tp = correctly_grouped_prefix (start_of_digits, cp, thousands, grouping);
- /* If TP is at the start of the digits, there was no correctly
- grouped prefix of the string; so no number found. */
+ if (grouping)
+ /* Check the grouping of the digits. */
+ tp = correctly_grouped_prefix (start_of_digits, cp, thousands,
+ grouping);
+ else
+ tp = cp;
+
RETURN (0.0, tp == start_of_digits ? nptr : tp);
}
@@ -418,7 +437,7 @@ INTERNAL (STRTOF) (nptr, endptr, group)
/* Check the grouping of the digits. */
tp = correctly_grouped_prefix (start_of_digits, cp, thousands, grouping);
if (cp != tp)
- {
+ {
/* Less than the entire string was correctly grouped. */
if (tp == start_of_digits)
@@ -539,7 +558,7 @@ INTERNAL (STRTOF) (nptr, endptr, group)
assert (dig_no >= int_no);
}
- number_parsed:
+ number_parsed:
/* The whole string is parsed. Store the address of the next character. */
if (endptr)
@@ -584,7 +603,6 @@ INTERNAL (STRTOF) (nptr, endptr, group)
int expbit = 1;
const struct mp_power *ttab = &_fpioconst_pow10[0];
- assert (exponent < (1 << (MAX_10_EXP_LOG + 1)));
do
{
if ((exponent & expbit) != 0)
diff --git a/stdlib/strtof.c b/stdlib/strtof.c
index fbf92e671a..1d1c41f46a 100644
--- a/stdlib/strtof.c
+++ b/stdlib/strtof.c
@@ -6,6 +6,5 @@
#define STRTOF strtof
#define MPN2FLOAT __mpn_construct_float
#define FLOAT_HUGE_VAL HUGE_VALf
-#define IMPLICIT_ONE 1
#include "strtod.c"
diff --git a/stdlib/strtold.c b/stdlib/strtold.c
index 6388cb904d..ec2b49b279 100644
--- a/stdlib/strtold.c
+++ b/stdlib/strtold.c
@@ -6,6 +6,5 @@
#define STRTOF strtold
#define MPN2FLOAT __mpn_construct_long_double
#define FLOAT_HUGE_VAL HUGE_VALl
-#define IMPLICIT_ONE 0 /* XXX for i387 extended format */
#include "strtod.c"
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 12:39:57 +0000