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Commit 9e9b0922 authored by baewoojin's avatar baewoojin
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Update README.md

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...@@ -174,3 +174,25 @@ ...@@ -174,3 +174,25 @@
~~~ ~~~
# project - STEP 2 # project - STEP 2
### 1. list of functions
- a. MUL ( x )
- b. DIV ( / )
- c. SINE
### 2. explanation of fuctions
- a. mul
- fx32_mul
~~~
(fixed32)((fa * fb) >> FX32_QNUM )
~~~
- fuction that multiplies fa and fb and divides it by 2^32
- fx32_mul1
~~~
((fixed32)(((fa>>16) * fb)>>16))
~~~
- Same as fx32_mul, the same fuction as fa*fb>>32, first multiply fa/2^16 and fb, and divide the remaining 2^16
- fx32_mul2
~~~
((fixed32)(((fa>>8)*(fb>>8))>>16))
~~~
- Same as above, the same fuction as fa*fb>>32, first multiply fa/2^8, fb/2^8, and divide the remaining 2^16
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