在下面的代码中,它看起来numarray
只需要一个参数,所以我不确定重复#t
的用途是什么,但是当并非所有参数都存在时,它会导致 hsc2hs 异常退出:
#let numarray t = "\
foreign import ccall unsafe mxIs%s :: MXArrayPtr -> IO CBool\n\
instance MXArrayComponent M%s where\n\
isMXArray a = boolC =.< withMXArray a mxIs%s\n\
createMXArray s = withNDims s (uncurry $ createNumericArray (mxClassOf (undefined :: M%s)) False) >>= mkMXArray\n\
\
mxArrayGetOffset = arrayDataGet ;\
mxArraySetOffset = arrayDataSet ;\
mxArrayGetOffsetList = arrayDataGetList ;\
mxArraySetOffsetList = arrayDataSetList\
\n\
instance MXArrayData MX%s M%s\
", #t, #t, #t, #t, #t, #t
foreign import ccall unsafe mxIsDouble :: MXArrayPtr -> IO CBool
foreign import ccall unsafe mxCreateDoubleScalar :: MXDouble -> IO MXArrayPtr
foreign import ccall unsafe mxGetScalar :: MXArrayPtr -> IO MXDouble
instance MXArrayComponent MDouble where
isMXArray a = boolC =.< withMXArray a mxIsDouble
createMXScalar = mxCreateDoubleScalar . hs2mx >=> mkMXArray
mxScalarGet a = withMXArray a mxGetScalar
createMXArray s = withNDims s (uncurry $ createNumericArray (mxClassOf (undefined :: Double)) False) >>= mkMXArray
#arrayDataComponent
instance MXArrayData MXDouble MDouble
#numarray Single
#numarray Int8
#numarray Int16
#numarray Int32
#numarray Int64
#numarray Uint8
#numarray Uint16
#numarray Uint32
#numarray Uint64