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MIPS: soft-fp NaN representation corrections

[BZ #15442] This adds support for the inverse interpretation of the
quiet bit of IEEE 754 floating-point NaN data that some processors
use.  This includes in particular MIPS architecture processors; the
payload used for the canonical qNaN encoding is updated accordingly
so as not to interfere with the quiet bit.
This commit is contained in:
Maciej W. Rozycki
2013-05-16 23:33:55 +01:00
parent c58b274f01
commit 2848b10585
15 changed files with 124 additions and 18 deletions

View File

@ -200,17 +200,17 @@ double gen_special_double(int i)
case 0:
X_c = FP_CLS_NAN;
#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D
__FP_FRAC_SET_2(X, _FP_QNANBIT_D, 0x1234);
__FP_FRAC_SET_2(X, _FP_QNANNEGATEDP ? 0 : _FP_QNANBIT_D, 0x1234);
#else
_FP_FRAC_SET_1(X, _FP_QNANBIT_D | 0x1234);
_FP_FRAC_SET_1(X, (_FP_QNANNEGATEDP ? 0 : _FP_QNANBIT_D) | 0x1234);
#endif
break;
case 2:
X_c = FP_CLS_NAN;
#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D
__FP_FRAC_SET_2(X, _FP_QNANBIT_D, 0x1);
__FP_FRAC_SET_2(X, _FP_QNANNEGATEDP ? 0 : _FP_QNANBIT_D, 0x1);
#else
_FP_FRAC_SET_1(X, _FP_QNANBIT_D | 0x1);
_FP_FRAC_SET_1(X, (_FP_QNANNEGATEDP ? 0 : _FP_QNANBIT_D) | 0x1);
#endif
break;
case 4: