Difference between revisions of "Instruction Set/rdivd"
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(Created page with "{{DISPLAYTITLE:rdivd}} <div style="font-size:80%;line-height:90%;margin-bottom:2em">realizing exu stream [[Decode|exu block]...") | |||
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{{DISPLAYTITLE:rdivd}} | {{DISPLAYTITLE:rdivd}} | ||
| − | <div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation| | + | <div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|speculable]] [[Encoding|exu stream]] [[Decode|exu block]] [[Phasing|compute phase]] operation [[Domains|in the decimal floating point value domain]] <br /> |
'''native on:''' [[Cores/Decimal8|Decimal8]] [[Cores/Decimal16|Decimal16]] <br /> | '''native on:''' [[Cores/Decimal8|Decimal8]] [[Cores/Decimal16|Decimal16]] <br /> | ||
</div> | </div> | ||
| − | reciprocal | + | Decimal float reciprocal dividide. |
| + | i.e. the result is 1/x. | ||
| + | |||
| + | This operation doesn't need rounding since no precision is lost. | ||
| + | |||
---- | ---- | ||
<code style="font-size:130%"><b style="color:#050">rdivd</b>(<span style="color:#009">[[Domains#d|d]]</span> <span title="belt operand from ops window">x</span>) → [[Domains#d|d]] r<sub>0</sub></code> | <code style="font-size:130%"><b style="color:#050">rdivd</b>(<span style="color:#009">[[Domains#d|d]]</span> <span title="belt operand from ops window">x</span>) → [[Domains#d|d]] r<sub>0</sub></code> | ||
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! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]] | ! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]] | ||
|- | |- | ||
| − | | [[Cores/Decimal8/Encoding# | + | | [[Cores/Decimal8/Encoding#rdivd|Decimal8]] || E0 E1 || d:d=4 dv:dv=4 q:q=5 qv:qv=5 |
|- | |- | ||
| − | | [[Cores/Decimal16/Encoding# | + | | [[Cores/Decimal16/Encoding#rdivd|Decimal16]] || E0 E1 || d:d=4 dv:dv=4 q:q=5 qv:qv=5 |
|} | |} | ||
| + | |||
| + | |||
| + | [[Instruction_Set|Instruction Set, alphabetical]], [[Instruction Set by Category]], [http://millcomputing.com/instructions.html?collapse=7#ops Instruction Set, sortable, filterable] | ||
Latest revision as of 09:33, 9 February 2015
Decimal float reciprocal dividide. i.e. the result is 1/x.
This operation doesn't need rounding since no precision is lost.
operands: like Addd [dd:d]
| Core | In Slots | Latencies |
|---|---|---|
| Decimal8 | E0 E1 | d:d=4 dv:dv=4 q:q=5 qv:qv=5 |
| Decimal16 | E0 E1 | d:d=4 dv:dv=4 q:q=5 qv:qv=5 |
Instruction Set, alphabetical, Instruction Set by Category, Instruction Set, sortable, filterable
