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[PATCH 04/35] softfloat: Add flags specific to Inf / Inf and 0 / 0
From: |
Richard Henderson |
Subject: |
[PATCH 04/35] softfloat: Add flags specific to Inf / Inf and 0 / 0 |
Date: |
Fri, 19 Nov 2021 17:04:31 +0100 |
PowerPC has these flags, and it's easier to compute them here
than after the fact.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/fpu/softfloat-types.h | 2 ++
fpu/softfloat-parts.c.inc | 16 +++++++++++-----
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h
index 56b4cf7835..5a9671e564 100644
--- a/include/fpu/softfloat-types.h
+++ b/include/fpu/softfloat-types.h
@@ -154,6 +154,8 @@ enum {
float_flag_output_denormal = 0x0040,
float_flag_invalid_isi = 0x0080, /* inf - inf */
float_flag_invalid_imz = 0x0100, /* inf * 0 */
+ float_flag_invalid_idi = 0x0200, /* inf / inf */
+ float_flag_invalid_zdz = 0x0400, /* 0 / 0 */
};
/*
diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc
index 3ed793347b..b8563cd2df 100644
--- a/fpu/softfloat-parts.c.inc
+++ b/fpu/softfloat-parts.c.inc
@@ -590,11 +590,13 @@ static FloatPartsN *partsN(div)(FloatPartsN *a,
FloatPartsN *b,
}
/* 0/0 or Inf/Inf => NaN */
- if (unlikely(ab_mask == float_cmask_zero) ||
- unlikely(ab_mask == float_cmask_inf)) {
- float_raise(float_flag_invalid, s);
- parts_default_nan(a, s);
- return a;
+ if (unlikely(ab_mask == float_cmask_zero)) {
+ float_raise(float_flag_invalid | float_flag_invalid_zdz, s);
+ goto d_nan;
+ }
+ if (unlikely(ab_mask == float_cmask_inf)) {
+ float_raise(float_flag_invalid | float_flag_invalid_idi, s);
+ goto d_nan;
}
/* All the NaN cases */
@@ -625,6 +627,10 @@ static FloatPartsN *partsN(div)(FloatPartsN *a,
FloatPartsN *b,
float_raise(float_flag_divbyzero, s);
a->cls = float_class_inf;
return a;
+
+ d_nan:
+ parts_default_nan(a, s);
+ return a;
}
/*
--
2.25.1
- [RFC PATCH for-7.0 00/35] target/ppc fpu fixes and cleanups, Richard Henderson, 2021/11/19
- [PATCH 01/35] softfloat: Extend float_exception_flags to 16 bits, Richard Henderson, 2021/11/19
- [PATCH 04/35] softfloat: Add flags specific to Inf / Inf and 0 / 0,
Richard Henderson <=
- [PATCH 02/35] softfloat: Add flag specific to Inf - Inf, Richard Henderson, 2021/11/19
- [PATCH 03/35] softfloat: Add flag specific to Inf * 0, Richard Henderson, 2021/11/19
- [PATCH 07/35] softfloat: Add flag specific to signaling nans, Richard Henderson, 2021/11/19
- [PATCH 08/35] target/ppc: Update float_invalid_op_addsub for new flags, Richard Henderson, 2021/11/19
- [PATCH 05/35] softfloat: Add flag specific to sqrt(-x), Richard Henderson, 2021/11/19
- [PATCH 06/35] softfloat: Add flag specific to convert non-nan to int, Richard Henderson, 2021/11/19
- [PATCH 10/35] target/ppc: Update float_invalid_op_div for new flags, Richard Henderson, 2021/11/19
- [PATCH 11/35] target/ppc: Move float_check_status from FPU_FCTI to translate, Richard Henderson, 2021/11/19
- [PATCH 09/35] target/ppc: Update float_invalid_op_mul for new flags, Richard Henderson, 2021/11/19
- [PATCH 12/35] target/ppc: Update float_invalid_cvt for new flags, Richard Henderson, 2021/11/19