View source for Instruction Set/fmaffz

{{DISPLAYTITLE:fmaffz}}
<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; [[Rounding|and rounds to nearest, ties away from zero]]<br />
'''native on:''' [[Cores/Silver|Silver]] <br />
</div>

Binary floating point fused multiply-add.
As usual for those, it yields a higher precision than doing it separately, and is faster too.
Rounds away from zero.

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<code style="font-size:130%"><b style="color:#050">fmaffz</b>(<span style="color:#009">[[Domains#f|f]]</span> <span title="belt operand from ops window">x</span>, <span style="color:#009">[[Domains#f|f]]</span> <span title="belt operand from ops window">y</span>, <span style="color:#009">[[Domains#f|f]]</span> <span title="belt operand from ops 
            window">z</span>) &#8594; [[Domains#f|f]] r<sub>0</sub></code>
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeAddf|like Addf [ff:f]]]
</div>
Returns x*y+z on the belt.<br />

{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
|-
| [[Cores/Silver/Encoding#fmaffz|Silver]] || E0 E1 || 
|}


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