skeleton for using cffi... kinda like the one for autowrap, just...

arrayfire.asd

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+;;;; arrayfire-lisp.asd
+;;;;
+;;;; Copyright (c) 2016 ArrayFire
+;;;; Copyright (c) 2016 Justin Patera <[email protected]>
+
+(asdf:defsystem #:arrayfire
+  :description "ArrayFire Bindings for Common Lisp"
+  :author "Justin Patera <[email protected]>"
+  :license "BSD 3-Clause License"
+
+  :depends-on (#:cffi
+               #:trivial-garbage)
+
+  :serial t
+  :pathname "src"
+  :components
+  ((:file "package")
+   (:file "cffi")
+   (:file "utils")))

src/cffi.lisp

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+;;;; cffi.lisp
+;;;;
+;;;; Copyright (c) 2016 ArrayFire
+;;;; Copyright (c) 2016 Justin Patera <[email protected]>
+
+(in-package :arrayfire)
+
+(define-foreign-library arrayfire
+  (t (:default "af")))
+
+(use-foreign-library arrayfire)
+
+; make array
+(defctype af-array :pointer)
+(defctype dim-t :long-long)
+
+(defcenum af-dtype
+  :f32
+  :c32
+  :f64
+  :c64
+  :b8
+  :s32
+  :u32
+  :u8
+  :s64
+  :u64
+  :s16
+  :u16)
+
+
+(defcenum af-err
+  :af-success
+  :af-err-no-mem
+  :af-err-driver
+  :af-err-runtime
+  :af-err-invalid-array
+  :af-err-arg
+  :af-err-size
+  :af-err-type
+  :af-err-diff-type
+  :af-err-batch
+  :af-err-device
+  :af-err-not-supported
+  :af-err-not-configured
+  :af-err-nonfree
+  :af-err-no-dbl
+  :af-err-no-gfx
+  :af-err-load-lib
+  :af-err-load-sym
+  :af-err-arr-bknd-mismatch
+  :af-err-internal
+  :af-err-unknown )
+
+
+
+(defcfun "af_create_array" af-err
+  (arr af-array)
+  (data :pointer)
+  (ndims :unsigned-int)
+  (dims dim-t)
+  (type af-dtype))
+
+;(let ((arr))
+;  (af-create-array arr 0 1 1 :b8))

src/package.lisp

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+;;;; package.lisp
+;;;;
+;;;; Copyright (c) 2016 ArrayFire
+;;;; Copyright (c) 2016 Justin Patera <[email protected]>
+
+(in-package :cl)
+
+(defpackage #:arrayfire
+  (:nicknames #:af)
+  (:use #:cl #:cffi)
+  ; as these will probably pose a small issue...
+  (:shadow ; Arithmatic Ops
+           #:+ #:- #:* #:/
+           ; Complex Ops
+           #:complex #:real
+           ; Exponential & Logarithmic Fns
+           #:exp #:log #:sqrt
+           ; Logical Ops
+           #:and #:eq #:not #:or
+           ; Numeric Fns
+           #:abs #:floor #:max #:min #:mod #:rem #:round
+           ; Trigonometric & Hyberbolic Fns
+           #:acos #:asin #:atan #:cos #:sin #:tan
+           #:acosh #:asinh #:atanh #:cosh #:sinh #:tanh)
+
+  (:export ;; lots more than this...
+           ; Arithmatic Ops
+           #:+ #:- #:* #:/
+           ; Complex Ops
+           #:complex #:real
+           ; Exponential & Logarithmic Fns
+           #:exp #:log #:sqrt
+           ; Logical Ops
+           #:and #:eq #:not #:or
+           ; Numeric Fns
+           #:abs #:floor #:max #:min #:mod #:rem #:round
+           ; Trigonometric & Hyberbolic Fns
+           #:acos #:asin #:atan #:cos #:sin #:tan
+           #:acosh #:asinh #:atanh #:cosh #:sinh #:tanh))

src/utils.lisp

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+;;;; autowrap.lisp
+;;;;
+;;;; Copyright (c) 2016 ArrayFire
+;;;; Copyright (c) 2016 Justin Patera <[email protected]>
+
+(in-package :arrayfire)
+
+; add utils here
+
+; because FizzBuzz is *essential* to our success!!!
+(defun fizzbuzz (n)
+  (if (< 0 n)
+      (fizzbuzz-helper 1 n)
+      (error "The Fizzing And The Buzzing And The FizzBuzzing Needs Numbers Greater Than Zero")))
+
+(defun fizzbuzz-helper (n x)
+  (if (<= n x)
+      (cons
+        (case (cl:mod n 15)
+          (0 "FizzBuzz")
+          ((3 6 9 12) "Fizz")
+          ((5 10) "Buzz")
+          (otherwise n))
+        (fizzbuzz-helper (1+ n) x))))