Difference between revisions of "Instruction Set/rrootf"

Revision as of 09:31, 9 February 2015

native on: Silver Gold

Binary float reciprocal square root. i.e. the result is 1/√x.

This operation doesn't need rounding since no precision is lost.

rrootf(f x) → f r₀

Core	In Slots	Latencies
Silver	E0 E1	w:w=3 wv:wv=3 d:d=4 dv:dv=4 q:q=5 qv:qv=5
Gold	E0 E1 E2 E3	w:w=3 wv:wv=3 d:d=4 dv:dv=4 q:q=5 qv:qv=5

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:rrootf}}
-<div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|realizing]]&nbsp;&nbsp;[[Encoding|exu stream]]&nbsp;&nbsp;[[Decode|exu block]]&nbsp;&nbsp;[[Phasing|compute phase]]&nbsp;&nbsp; operation&nbsp;&nbsp; [[Domains|in the binary floating point value domain]]&nbsp;&nbsp;<br />
+<div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|speculable]]&nbsp;&nbsp;[[Encoding|exu stream]]&nbsp;&nbsp;[[Decode|exu block]]&nbsp;&nbsp;[[Phasing|compute phase]]&nbsp;&nbsp; operation&nbsp;&nbsp; [[Domains|in the binary floating point value domain]]&nbsp;&nbsp;<br />
 '''native on:''' [[Cores/Silver|Silver]] [[Cores/Gold|Gold]] <br />
 </div>