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moschatels (ints)

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This commit is contained in:
nik gaffney 2024-01-02 20:15:04 +01:00
parent 5c7ed79a7f
commit f647738ccc
Signed by: nik
GPG key ID: 989F5E6EDB478160
2 changed files with 24 additions and 17 deletions
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11
osc-tests.lisp
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@ -48,11 +48,18 @@
(is (equalp
(osc::encode-int32 16843009) #(1 1 1 1)))
(is (equalp
(osc::decode-int32 #(1 1 11 111)) 16845679))
(osc::decode-int32 #(127 255 255 255))
(osc::decode-uint32 #(127 255 255 255))))
(is (equalp
(osc::encode-int32 -16843010) #(254 254 254 254)))
(is (equalp
(osc::decode-int32 #(255 255 255 255)) -1)))
(osc::decode-int32 #(127 255 255 255)) #x7FFFFFFF))
(is (equalp
(osc::encode-int32 #xFFFFFFFF) #(255 255 255 255)))
(is (equalp
(osc::decode-int32 #(255 255 255 255)) -1))
(is (equalp
(osc::decode-uint32 #(255 255 255 255)) #xFFFFFFFF)))
(test osc-string
"OSC string encoding tests."

8
osc.lisp
View file

@ -325,15 +325,15 @@
(defun decode-int32 (s)
"4 byte -> 32 bit int -> two's complement (in network byte order)"
(let ((i (decode-uint32 s)))
(if (>= i #.(1- (expt 2 31)))
(- (- #.(expt 2 32) i))
(if (>= i (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 #.(1- (expt 2 63)))
(- (- #.(expt 2 64) i))
(if (>= i (expt 2 63))
(- (- (expt 2 64) i))
i)))
;; floats are encoded using ieee-floats library for brevity and compatibility