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[Qemu-devel] [PULL v3 04/15] softfloat: add float{32, 64}_is_{de, }norma
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [PULL v3 04/15] softfloat: add float{32, 64}_is_{de, }normal |
Date: |
Mon, 17 Dec 2018 10:56:39 +0000 |
From: "Emilio G. Cota" <address@hidden>
This paves the way for upcoming work.
Reviewed-by: Bastian Koppelmann <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
Signed-off-by: Emilio G. Cota <address@hidden>
Signed-off-by: Alex Bennée <address@hidden>
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 8fd9f9bbae..9eeccd88a5 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -464,6 +464,16 @@ static inline int float32_is_zero_or_denormal(float32 a)
return (float32_val(a) & 0x7f800000) == 0;
}
+static inline bool float32_is_normal(float32 a)
+{
+ return ((float32_val(a) + 0x00800000) & 0x7fffffff) >= 0x01000000;
+}
+
+static inline bool float32_is_denormal(float32 a)
+{
+ return float32_is_zero_or_denormal(a) && !float32_is_zero(a);
+}
+
static inline float32 float32_set_sign(float32 a, int sign)
{
return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31));
@@ -605,6 +615,16 @@ static inline int float64_is_zero_or_denormal(float64 a)
return (float64_val(a) & 0x7ff0000000000000LL) == 0;
}
+static inline bool float64_is_normal(float64 a)
+{
+ return ((float64_val(a) + (1ULL << 52)) & -1ULL >> 1) >= 1ULL << 53;
+}
+
+static inline bool float64_is_denormal(float64 a)
+{
+ return float64_is_zero_or_denormal(a) && !float64_is_zero(a);
+}
+
static inline float64 float64_set_sign(float64 a, int sign)
{
return make_float64((float64_val(a) & 0x7fffffffffffffffULL)
--
2.17.1
- Re: [Qemu-devel] [PULL v3 08/15] tests/fp: add fp-bench, (continued)
- [Qemu-devel] [PULL v3 09/15] fpu: introduce hardfloat, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 14/15] hardfloat: implement float32/64 square root, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 11/15] hardfloat: implement float32/64 multiplication, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 10/15] hardfloat: implement float32/64 addition and subtraction, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 07/15] softfloat: add float{32, 64}_is_zero_or_normal, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 06/15] softfloat: rename canonicalize to sf_canonicalize, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 01/15] contrib: add a basic gitdm config, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 05/15] target/tricore: use float32_is_denormal, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 04/15] softfloat: add float{32, 64}_is_{de, }normal,
Alex Bennée <=
- [Qemu-devel] [PULL v3 02/15] MAINTAINERS: update status of FPU emulation, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 03/15] fp-test: pick TARGET_ARM to get its specialization, Alex Bennée, 2018/12/17
- [Qemu-devel] [PULL v3 13/15] hardfloat: implement float32/64 fused multiply-add, Alex Bennée, 2018/12/17
- Re: [Qemu-devel] [PULL v3 00/15] Hardfloat + softfloat maintainers update and gitdm, Peter Maydell, 2018/12/18