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authorUlrich Drepper <drepper@redhat.com>1999-03-08 21:41:47 +0000
committerUlrich Drepper <drepper@redhat.com>1999-03-08 21:41:47 +0000
commit5be4316ea2f4bb8a59a7861b5dd3c5ebfea6a715 (patch)
treef33e10763cba76eb5dd8c5c86db7f7b07b9cc1cc /stdlib
parent29329ef54739d84393b59058d83ba23e40ca88e9 (diff)
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Update.
1999-03-09 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * stdlib/strtod.c (round_and_return): Fix rounding of denormals. (DENORM_EXP): New define. Use it as the exponent for a denormal. * stdlib/strtold.c: Moved to ... * sysdeps/generic/strtold.c: ... here. * sysdeps/m68k/strtold.c: New file. 1999-03-09 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * stdio-common/printf_fphex.c (__printf_fphex): Print no decimal point if the precision is zero, even if the mantissa is non-zero.
Diffstat (limited to 'stdlib')
-rw-r--r--stdlib/strtod.c12
-rw-r--r--stdlib/strtold.c41
2 files changed, 9 insertions, 44 deletions
diff --git a/stdlib/strtod.c b/stdlib/strtod.c
index 5b15859..0de96a5 100644
--- a/stdlib/strtod.c
+++ b/stdlib/strtod.c
@@ -226,7 +226,7 @@ round_and_return (mp_limb_t *retval, int exponent, int negative,
int i;
round_limb = retval[RETURN_LIMB_SIZE - 1];
- round_bit = BITS_PER_MP_LIMB - 1;
+ round_bit = (MANT_DIG - 1) % BITS_PER_MP_LIMB;
for (i = 0; i < RETURN_LIMB_SIZE; ++i)
more_bits |= retval[i] != 0;
MPN_ZERO (retval, RETURN_LIMB_SIZE);
@@ -254,7 +254,13 @@ round_and_return (mp_limb_t *retval, int exponent, int negative,
round_bit = shift - 1;
(void) __mpn_rshift (retval, retval, RETURN_LIMB_SIZE, shift);
}
- exponent = MIN_EXP - 2;
+ /* This is a hook for the m68k long double format, where the
+ exponent bias is the same for normalized and denormalized
+ numbers. */
+#ifndef DENORM_EXP
+# define DENORM_EXP (MIN_EXP - 2)
+#endif
+ exponent = DENORM_EXP;
}
if ((round_limb & (((mp_limb_t) 1) << round_bit)) != 0
@@ -273,7 +279,7 @@ round_and_return (mp_limb_t *retval, int exponent, int negative,
retval[RETURN_LIMB_SIZE - 1]
|= ((mp_limb_t) 1) << ((MANT_DIG - 1) % BITS_PER_MP_LIMB);
}
- else if (exponent == MIN_EXP - 2
+ else if (exponent == DENORM_EXP
&& (retval[RETURN_LIMB_SIZE - 1]
& (((mp_limb_t) 1) << ((MANT_DIG - 1) % BITS_PER_MP_LIMB)))
!= 0)
diff --git a/stdlib/strtold.c b/stdlib/strtold.c
deleted file mode 100644
index f1bb2f1..0000000
--- a/stdlib/strtold.c
+++ /dev/null
@@ -1,41 +0,0 @@
-#include <math.h>
-
-#ifndef __NO_LONG_DOUBLE_MATH
-/* The actual implementation for all floating point sizes is in strtod.c.
- These macros tell it to produce the `long double' version, `strtold'. */
-
-# define FLOAT long double
-# define FLT LDBL
-# ifdef USE_IN_EXTENDED_LOCALE_MODEL
-# define STRTOF __strtold_l
-# else
-# define STRTOF strtold
-# endif
-# define MPN2FLOAT __mpn_construct_long_double
-# define FLOAT_HUGE_VAL HUGE_VALL
-# define SET_MANTISSA(flt, mant) \
- do { union ieee854_long_double u; \
- u.d = (flt); \
- if ((mant & 0x7fffffffffffffffULL) == 0) \
- mant = 0x4000000000000000ULL; \
- u.ieee.mantissa0 = (((mant) >> 32) & 0x7fffffff) | 0x80000000; \
- u.ieee.mantissa1 = (mant) & 0xffffffff; \
- (flt) = u.d; \
- } while (0)
-
-# include "strtod.c"
-#else
-# include <stdlib.h>
-/* There is no `long double' type, use the `double' implementations. */
-long double
-__strtold_internal (const char *nptr, char **endptr, int group)
-{
- return __strtod_internal (nptr, endptr, group);
-}
-
-long double
-strtold (const char *nptr, char **endptr)
-{
- return __strtod_internal (nptr, endptr, 0);
-}
-#endif