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Richard M Kreuter
cmucl-copy
Commits
edcbb7d3
Commit
edcbb7d3
authored
7 years ago
by
Raymond Toy
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Test portable version of xoroshiro-next
parent
c62e3467
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src/code/rand-xoroshiro.lisp
+20
-27
20 additions, 27 deletions
src/code/rand-xoroshiro.lisp
with
20 additions
and
27 deletions
src/code/rand-xoroshiro.lisp
+
20
−
27
View file @
edcbb7d3
...
...
@@ -142,13 +142,12 @@
(
let
((
s
(
xoro-random-state-state
rng-state
)))
(
declare
(
type
(
simple-array
double-float
(
2
))
s
))
(
multiple-value-bind
(
r1
r0
)
(
vm::
xoroshiro-next
s
)
(
xoroshiro-next
-portable
s
)
(
setf
(
xoro-random-state-rand
rng-state
)
r0
)
(
setf
(
xoro-random-state-cached-p
rng-state
)
t
)
r1
))))))
#-
x86
(
defun
xoroshiro-next
(
state
)
(
defun
xoroshiro-next-portable
(
state
)
(
declare
(
type
(
simple-array
double-float
(
2
))
state
))
(
flet
((
rotl-55
(
x1
x0
)
(
declare
(
type
(
unsigned-byte
32
)
x0
x1
)
...
...
@@ -192,10 +191,8 @@
(
let
((
s0-1
0
)
(
s0-0
0
)
(
s1-1
0
)
(
s1-0
0
)
(
r1
0
)
(
r0
0
))
(
declare
(
type
(
unsigned-byte
32
))
s0-1
s0-0
s1-1
s1-0
r1
r0
)
(
s1-0
0
))
(
declare
(
type
(
unsigned-byte
32
)
s0-1
s0-0
s1-1
s1-0
))
(
multiple-value-bind
(
x1
x0
)
(
kernel:double-float-bits
(
aref
state
0
))
(
setf
s0-1
(
ldb
(
byte
32
0
)
x1
)
...
...
@@ -210,27 +207,23 @@
(
bignum::%add-with-carry
s0-0
s1-0
0
)
(
values
(
bignum::%add-with-carry
s0-1
s1-1
c
)
sum-0
))
;; s1 ^= s0
(
setf
s1-1
(
logxor
s1-1
s0-1
)
s1-0
(
logxor
s1-0
s0-0
))
;; s[0] = rotl(s0,55) ^ s1 ^ (s1 << 14)
(
multiple-value-setq
(
s0-1
s0-0
)
(
rotl-55
s0-1
s0-0
))
(
setf
s0-1
(
logxor
s0-1
s1-1
)
s0-0
(
logxor
s0-0
s1-0
))
(
multiple-value-bind
(
s14-1
s14-0
)
(
shl-14
s1-1
s1-0
)
(
setf
s0-1
(
logxor
s0-1
s14-1
)
s0-0
(
logxor
s0-0
s14-0
)))
(
setf
(
aref
s
0
)
s0-0
)
(
setf
(
aref
s
1
)
s0-1
)
;; s1 ^= s0
(
setf
s1-1
(
logxor
s1-1
s0-1
)
s1-0
(
logxor
s1-0
s0-0
))
;; s[0] = rotl(s0,55) ^ s1 ^ (s1 << 14)
(
multiple-value-setq
(
s0-1
s0-0
)
(
rotl-55
s0-1
s0-0
))
(
setf
s0-1
(
logxor
s0-1
s1-1
)
s0-0
(
logxor
s0-0
s1-0
))
(
multiple-value-bind
(
s14-1
s14-0
)
(
shl-14
s1-1
s1-0
)
(
setf
s0-1
(
logxor
s0-1
s14-1
)
s0-0
(
logxor
s0-0
s14-0
)))
(
multiple-value-bind
(
r1
r0
)
(
rotl-36
s1-1
s1-0
)
(
setf
(
aref
s
2
)
r0
(
aref
s
3
)
r1
))
(
setf
(
aref
state
0
)
(
make-double
s0-1
s0-0
)
(
aref
state
1
)
(
make-double
s1-1
s1-0
))))))
(
multiple-value-bind
(
r1
r0
)
(
rotl-36
s1-1
s1-0
)
(
setf
(
aref
state
0
)
(
make-double
s0-1
s0-0
)
(
aref
state
1
)
(
make-double
r1
r0
)))))))
;;; %RANDOM-SINGLE-FLOAT, %RANDOM-DOUBLE-FLOAT -- Interface
;;;
...
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