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Use Read-time evaluation to make code more readable

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This commit is contained in:
Javier Olaechea 2019-03-24 16:57:45 -05:00
parent 9facf444f4
commit db5dd2b166
1 changed files with 4 additions and 4 deletions
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8
osc.lisp
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@ -329,15 +329,15 @@
(defun decode-int32 (s)
"4 byte -> 32 bit int -> two's complement (in network byte order)"
(let ((i (decode-uint32 s)))
(if (>= i #x7fffffff)
(- 0 (- #x100000000 i))
(if (>= i #.(1- (expt 2 31)))
(- (- #.(expt 2 32) i))
i)))
(defun decode-int64 (s)
"8 byte -> 64 bit int -> two's complement (in network byte order)"
(let ((i (decode-uint64 s)))
(if (>= i #x7fffffffffffffff)
(- 0 (- #x10000000000000000 i))
(if (>= i #.(1- (expt 2 63)))
(- (- #.(expt 2 64) i))
i)))
;; osc-strings are unsigned bytes, padded to a 4 byte boundary