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| From: | Nikunj Dadhania |
| Subject: | Re: [Qemu-ppc] [PATCH v1] target/ppc: rewrite f[n]m[add, sub] using float64_muladd |
| Date: | Thu, 2 Mar 2017 09:38:14 +0530 |
On 03/02/2017 11:29 AM, David Gibson wrote:Looks like a bugfix to me. Previously we were attempting the operation via float128 as an intermediate type, which can result in double rounding errors.
On Wed, Mar 01, 2017 at 08:54:14PM +0530, Nikunj A Dadhania wrote:
Use the softfloat api for fused multiply-add. Also, generate VXISI using
a helper function by computing intermediate result.
Um.. I really need some information on why this is a good thing to
do. Is it a bugfix? Enhancement? Simplification?
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