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softfloat: Add flag specific to Inf - Inf

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PowerPC has this flag, and it's easier to compute it here
than after the fact.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211119160502.17432-3-richard.henderson@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Richard Henderson 2021-12-17 17:57:14 +01:00 committed by Cédric Le Goater
parent 149a48f6e6
commit ba11446c40
2 changed files with 3 additions and 1 deletions
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3
fpu/softfloat-parts.c.inc
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@ -354,7 +354,7 @@ static FloatPartsN *partsN(addsub)(FloatPartsN *a, FloatPartsN *b,
return a;
}
/* Inf - Inf */
float_raise(float_flag_invalid, s);
float_raise(float_flag_invalid | float_flag_invalid_isi, s);
parts_default_nan(a, s);
return a;
}
@ -494,6 +494,7 @@ static FloatPartsN *partsN(muladd)(FloatPartsN *a, FloatPartsN *b,
if (ab_mask & float_cmask_inf) {
if (c->cls == float_class_inf && a->sign != c->sign) {
float_raise(float_flag_invalid | float_flag_invalid_isi, s);
goto d_nan;
}
goto return_inf;

1
include/fpu/softfloat-types.h
View File

@ -152,6 +152,7 @@ enum {
float_flag_inexact = 0x0010,
float_flag_input_denormal = 0x0020,
float_flag_output_denormal = 0x0040,
float_flag_invalid_isi = 0x0080, /* inf - inf */
};
/*