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Mult for Mantissa

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#35 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
scala
Domain
backend

Research direction

Read MulAddRecFN.scala, starting with the preMul and postMul flow described in the issue and the addition at line 206. Trace the mantissa path for operands A and B to determine where multiplication occurs; done means identifying that operation in the existing flow and documenting the relevant location.

Written by the indexing model from the issue text.

Description

I look into MulAddRecFN.scala which is seemed that body of float mult-add (out = A*B + C).
The flow is indeed as follows;
in -> preMul -> postMul -> out

  • preMul
  1. extract sign, significant, mantissa by rawFloatFromRecFN().
  2. Significant of C alignment
  3. output
  • postMul
  1. Addition with C (line #206)
  2. Normalize for result
  3. Rounding for result

I could not find multiplication for mantissa part of A and B operands, where actually does it?

Dominant language
Scala
Stars
393
Forks
110
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