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[Qemu-devel] [RFC PATCH 07/30] fpu/softfloat: implement float16_abs help
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [RFC PATCH 07/30] fpu/softfloat: implement float16_abs helper |
Date: |
Fri, 13 Oct 2017 17:24:15 +0100 |
This will be required when expanding the MINMAX() macro for 16
bit/half-precision operations.
Signed-off-by: Alex Bennée <address@hidden>
---
include/fpu/softfloat.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index d5e99667b6..edf402d422 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -374,6 +374,13 @@ static inline int float16_is_zero_or_denormal(float16 a)
return (float16_val(a) & 0x7c00) == 0;
}
+static inline float16 float16_abs(float16 a)
+{
+ /* Note that abs does *not* handle NaN specially, nor does
+ * it flush denormal inputs to zero.
+ */
+ return make_float16(float16_val(a) & 0x7fff);
+}
/*----------------------------------------------------------------------------
| The pattern for a default generated half-precision NaN.
*----------------------------------------------------------------------------*/
--
2.14.1
- Re: [Qemu-devel] [RFC PATCH 03/30] include/exec/helper-head.h: support f16 in helper calls, (continued)
- [Qemu-devel] [RFC PATCH 01/30] linux-user/main: support dfilter, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 04/30] target/arm/cpu.h: update comment for half-precision values, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 06/30] fpu/softfloat: implement float16_squash_input_denormal, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 02/30] arm: introduce ARM_V8_FP16 feature bit, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 07/30] fpu/softfloat: implement float16_abs helper,
Alex Bennée <=
- [Qemu-devel] [RFC PATCH 05/30] softfloat: implement propagateFloat16NaN, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 08/30] softfloat: add half-precision expansions for MINMAX fns, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 10/30] softfloat: improve comments on ARM NaN propagation, Alex Bennée, 2017/10/13
- [Qemu-devel] [RFC PATCH 12/30] target/arm/translate-a64.c: handle_3same_64 comment fix, Alex Bennée, 2017/10/13