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| author | Ulrich Drepper <drepper@redhat.com> | 1999-03-08 21:41:47 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-03-08 21:41:47 +0000 |
| commit | 5be4316ea2f4bb8a59a7861b5dd3c5ebfea6a715 (patch) | |
| tree | f33e10763cba76eb5dd8c5c86db7f7b07b9cc1cc /stdlib | |
| parent | 29329ef54739d84393b59058d83ba23e40ca88e9 (diff) | |
| download | glibc-5be4316ea2f4bb8a59a7861b5dd3c5ebfea6a715.tar.gz glibc-5be4316ea2f4bb8a59a7861b5dd3c5ebfea6a715.tar.xz glibc-5be4316ea2f4bb8a59a7861b5dd3c5ebfea6a715.zip | |
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.c | 12 | ||||
| -rw-r--r-- | stdlib/strtold.c | 41 |
2 files changed, 9 insertions, 44 deletions
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/stdlib/strtold.c deleted file mode 100644 index f1bb2f1c0d..0000000000 --- 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 |