In support of the 33s & 35s

[TheKaneB]

@BartDB: thanks for the explanation, very helpful!
I am still baffled by the execution time difference, I have the same concerns that pier4r expressed earlier.

My speculation is that the symbol "pi" is a pointer to the actual constant, so only 2 bytes are shuffled around the stack instead of 37, thus saving a lot of time in load/store operations, that and maybe the IP command is using some internal data type trick to clear out the decimal part in a few cycles.