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[Qemu-devel] [RFC PATCH for 2.11 20/23] fpu/softfloat2a: add half-precis
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [RFC PATCH for 2.11 20/23] fpu/softfloat2a: add half-precision expansions for MINMAX fns |
Date: |
Thu, 20 Jul 2017 16:04:23 +0100 |
As SoftFloat3c doesn't have helpers for min/max and we already
implemented it in 2a lets just expand the current helpers to include
half-precision functions. The includes having f16 version of the
compare functions.
Signed-off-by: Alex Bennée <address@hidden>
---
fpu/softfloat2a/softfloat.c | 2 ++
include/fpu/softfloat2a/softfloat.h | 11 +++++++++++
2 files changed, 13 insertions(+)
diff --git a/fpu/softfloat2a/softfloat.c b/fpu/softfloat2a/softfloat.c
index 4f1abbe08f..67115298bd 100644
--- a/fpu/softfloat2a/softfloat.c
+++ b/fpu/softfloat2a/softfloat.c
@@ -7579,6 +7579,7 @@ int float ## s ## _compare_quiet(float ## s a, float ## s
b, \
return float ## s ## _compare_internal(a, b, 1, status); \
}
+COMPARE(16, 0x1f)
COMPARE(32, 0xff)
COMPARE(64, 0x7ff)
@@ -7779,6 +7780,7 @@ float ## s float ## s ## _maxnummag(float ## s a, float
## s b, \
return float ## s ## _minmax(a, b, 0, 1, 1, status); \
}
+MINMAX(16)
MINMAX(32)
MINMAX(64)
diff --git a/include/fpu/softfloat2a/softfloat.h
b/include/fpu/softfloat2a/softfloat.h
index 3cb41977d8..dd1293d802 100644
--- a/include/fpu/softfloat2a/softfloat.h
+++ b/include/fpu/softfloat2a/softfloat.h
@@ -386,6 +386,17 @@ static inline float16 float16_abs(float16 a)
*/
return make_float16(float16_val(a) & 0x7fff);
}
+
+/* Expanded by the MINMAX macro in softfloat.c */
+int float16_compare(float16, float16, float_status *status);
+int float16_compare_quiet(float16, float16, float_status *status);
+float16 float16_min(float16, float16, float_status *status);
+float16 float16_max(float16, float16, float_status *status);
+float16 float16_minnum(float16, float16, float_status *status);
+float16 float16_maxnum(float16, float16, float_status *status);
+float16 float16_minnummag(float16, float16, float_status *status);
+float16 float16_maxnummag(float16, float16, float_status *status);
+
/*----------------------------------------------------------------------------
| The pattern for a default generated half-precision NaN.
*----------------------------------------------------------------------------*/
--
2.13.0
- Re: [Qemu-devel] [RFC PATCH for 2.11 15/23] target/arm/translate-a64.c: AdvSIMD scalar 2 register misc decode, (continued)
- [Qemu-devel] [RFC PATCH for 2.11 22/23] fpu/softfloat2a: improve comments on ARM NaN propagation, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 23/23] target/arm: implement half-precision F(MIN|MAX)(V|NMV), Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 18/23] fpu/softfloat2a: implement float16_squash_input_denormal, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 14/23] target/arm/translate-a64.c: add ARMv8.2 fadd scalar half-precision, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 19/23] fpu/softfloat2a: implement float16_abs helper, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 21/23] fpu/softfloat2a: propagate signalling NaNs in MINMAX, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 16/23] include/exec/helper-head.h: support f16 in helper calls, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 20/23] fpu/softfloat2a: add half-precision expansions for MINMAX fns,
Alex Bennée <=
- Re: [Qemu-devel] [RFC PATCH for 2.11 00/23] Implementing FP16 for ARMv8.2 using SoftFloat2a and 3c, Peter Maydell, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 02/23] fpu: import SoftFloat3c, Alex Bennée, 2017/07/20
- [Qemu-devel] [RFC PATCH for 2.11 03/23] softfloat3c: dos2unix all files, Alex Bennée, 2017/07/20