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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.
This commit is contained in:
Ulrich Drepper
1999-03-08 21:41:47 +00:00
parent 29329ef547
commit 5be4316ea2
4 changed files with 24 additions and 3 deletions
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12
stdlib/strtod.c
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@ -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)