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softfloat: Move compare_floats to softfloat-parts.c.inc

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Rename to parts$N_compare.  Rename all of the intermediate
functions to ftype_do_compare.  Rename the hard-float functions
to ftype_hs_compare.  Convert float128 to FloatParts128.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-11-14 19:20:36 -08:00
parent ceebc129e5
commit 6eb169b89a
2 changed files with 133 additions and 132 deletions
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57
fpu/softfloat-parts.c.inc
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@ -1018,3 +1018,60 @@ static FloatPartsN *partsN(minmax)(FloatPartsN *a, FloatPartsN *b,
}
return cmp < 0 ? b : a;
}
/*
* Floating point compare
*/
static FloatRelation partsN(compare)(FloatPartsN *a, FloatPartsN *b,
float_status *s, bool is_quiet)
{
int ab_mask = float_cmask(a->cls) | float_cmask(b->cls);
int cmp;
if (likely(ab_mask == float_cmask_normal)) {
if (a->sign != b->sign) {
goto a_sign;
}
if (a->exp != b->exp) {
cmp = a->exp < b->exp ? -1 : 1;
} else {
cmp = frac_cmp(a, b);
}
if (a->sign) {
cmp = -cmp;
}
return cmp;
}
if (unlikely(ab_mask & float_cmask_anynan)) {
if (!is_quiet || (ab_mask & float_cmask_snan)) {
float_raise(float_flag_invalid, s);
}
return float_relation_unordered;
}
if (ab_mask & float_cmask_zero) {
if (ab_mask == float_cmask_zero) {
return float_relation_equal;
} else if (a->cls == float_class_zero) {
goto b_sign;
} else {
goto a_sign;
}
}
if (ab_mask == float_cmask_inf) {
if (a->sign == b->sign) {
return float_relation_equal;
}
} else if (b->cls == float_class_inf) {
goto b_sign;
} else {
g_assert(a->cls == float_class_inf);
}
a_sign:
return a->sign ? float_relation_less : float_relation_greater;
b_sign:
return b->sign ? float_relation_greater : float_relation_less;
}