diff options
| -rw-r--r-- | ChangeLog | 13 | ||||
| -rw-r--r-- | stdlib/strtod.c | 12 | ||||
| -rw-r--r-- | sysdeps/generic/strtold.c (renamed from stdlib/strtold.c) | 0 | ||||
| -rw-r--r-- | sysdeps/m68k/strtold.c | 2 |
4 files changed, 24 insertions, 3 deletions
@@ -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> * sysdeps/mach/hurd/ioctl.c (__ioctl): Move the marshalling of the diff --git a/stdlib/strtod.c b/stdlib/strtod.c index 5b15859066..0de96a571b 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/sysdeps/generic/strtold.c index f1bb2f1c0d..f1bb2f1c0d 100644 --- a/stdlib/strtold.c +++ b/sysdeps/generic/strtold.c diff --git a/sysdeps/m68k/strtold.c b/sysdeps/m68k/strtold.c new file mode 100644 index 0000000000..dd7fbce195 --- /dev/null +++ b/sysdeps/m68k/strtold.c @@ -0,0 +1,2 @@ +#define DENORM_EXP (MIN_EXP - 1) +#include <sysdeps/generic/strtold.c> |