Update README.md

README.md

@@ -196,3 +196,19 @@
   ((fixed32)(((fa>>8)*(fb>>8))>>16))
   ~~~
      1. Same as above, the same fuction as fa*fb>>32, first multiply fa/2^8, fb/2^8, and divide the remaining 2^16
+- a. div
+  - fx32_div
+  ~~~
+  (fixed32)( (((fixed64)(fa) << FX32_QNUM) /(fb))) 
+  ~~~
+     1. fuction that multiplies fa by 2^32 and divides fb.
+  - fx32_div1
+  ~~~
+  ((((fa)<<16)/(fb))<<16)
+  ~~~
+     1. Same as above, it has the same fuction as (fa<<32)/fb. First, fa is multiplied by 2^16 and divided by fb, and then the remaining 2^16 is multiplied
+  - fx32_div2
+  ~~~
+  ((((fa)<<24)/(fb))<<8)
+  ~~~
+     1. same as above, it has the same fuction as (fa<<32)/fb. First, fa is multiplied by 2^24, divided by fb, and then the remaining 2^8 is multiplied.
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