agolajko

## suez_fp_trick.md

      
        
          
            
              
              1 file
            
          
          
            
              
              0 forks
            
          
          
            
              
              0 comments
            
          
          
            
              
              4 stars
            
          
        
        
          
              
          
          
            
                agolajko
                / suez_fp_trick.md
            
            
              Last active
              August 8, 2022 22:26
            
              
                Quick trick for better looping in Cairo
              
          
        
      
        
  
      
    Returning fp for calling functions in Cairo loops

Getting loops to work in Starknet's Cairo can be complicated. Currently you need to fiddle around a lot with ap, fp and pc even for mundane computations.
Further, when calling a function within a loop tempvar will be dereferenced causing the loop to fail. For example the following code will not run:
tempvar iterator=10
tempvar sum=0

loop_start:
 let (local a, local b)=div (10, 5)