diff options
Diffstat (limited to 'lib/libc/gdtoa/_ldtoa.c')
| -rw-r--r-- | lib/libc/gdtoa/_ldtoa.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/libc/gdtoa/_ldtoa.c b/lib/libc/gdtoa/_ldtoa.c index 10731c4..952ca98 100644 --- a/lib/libc/gdtoa/_ldtoa.c +++ b/lib/libc/gdtoa/_ldtoa.c @@ -46,11 +46,11 @@ char * __ldtoa(long double *ld, int mode, int ndigits, int *decpt, int *sign, char **rve) { - static FPI fpi = { + FPI fpi = { LDBL_MANT_DIG, /* nbits */ LDBL_MIN_EXP - LDBL_MANT_DIG, /* emin */ LDBL_MAX_EXP - LDBL_MANT_DIG, /* emax */ - FPI_Round_near, /* rounding */ + FLT_ROUNDS, /* rounding */ #ifdef Sudden_Underflow /* unused, but correct anyway */ 1 #else @@ -64,7 +64,15 @@ __ldtoa(long double *ld, int mode, int ndigits, int *decpt, int *sign, void *vbits = bits; u.e = *ld; + + /* + * gdtoa doesn't know anything about the sign of the number, so + * if the number is negative, we need to swap rounding modes of + * 2 (upwards) and 3 (downwards). + */ *sign = u.bits.sign; + fpi.rounding ^= (fpi.rounding >> 1) & u.bits.sign; + be = u.bits.exp - (LDBL_MAX_EXP - 1) - (LDBL_MANT_DIG - 1); LDBL_TO_ARRAY32(u, bits); |
