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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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13
ChangeLog
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@ -1,3 +1,16 @@
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.
1999-03-09 Roland McGrath <roland@baalperazim.frob.com> 1999-03-09 Roland McGrath <roland@baalperazim.frob.com>
* sysdeps/mach/hurd/ioctl.c (__ioctl): Move the marshalling of the * sysdeps/mach/hurd/ioctl.c (__ioctl): Move the marshalling of the

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; int i;
round_limb = retval[RETURN_LIMB_SIZE - 1]; 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) for (i = 0; i < RETURN_LIMB_SIZE; ++i)
more_bits |= retval[i] != 0; more_bits |= retval[i] != 0;
MPN_ZERO (retval, RETURN_LIMB_SIZE); 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; round_bit = shift - 1;
(void) __mpn_rshift (retval, retval, RETURN_LIMB_SIZE, shift); (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 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] retval[RETURN_LIMB_SIZE - 1]
|= ((mp_limb_t) 1) << ((MANT_DIG - 1) % BITS_PER_MP_LIMB); |= ((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] && (retval[RETURN_LIMB_SIZE - 1]
& (((mp_limb_t) 1) << ((MANT_DIG - 1) % BITS_PER_MP_LIMB))) & (((mp_limb_t) 1) << ((MANT_DIG - 1) % BITS_PER_MP_LIMB)))
!= 0) != 0)

0
stdlib/strtold.c → sysdeps/generic/strtold.c
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2
sysdeps/m68k/strtold.c Normal file
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@ -0,0 +1,2 @@
#define DENORM_EXP (MIN_EXP - 1)
#include <sysdeps/generic/strtold.c>