Commitdcff1d5

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Lines changed: 20 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -62,6 +62,26 @@ function transpose_8x8bit(a::UInt64)`
`62`	`62`	`return x`
`63`	`63`	`end`
`64`	`64`
	`65`	`+`
	`66`	`+# https://discourse.julialang.org/t/covert-bitarray-to-int64/9193/6`
	`67`	`+# This was stated to be better than the LLVM intrinsic!`
	`68`	`+functionrevbits(z::UInt64)`
	`69`	`+ z= (((z&0xaaaaaaaaaaaaaaaa)>>1)\| ((z&0x5555555555555555)<<1))`
	`70`	`+ z= (((z&0xcccccccccccccccc)>>2)\| ((z&0x3333333333333333)<<2))`
	`71`	`+ z= (((z&0xf0f0f0f0f0f0f0f0)>>4)\| ((z&0x0f0f0f0f0f0f0f0f)<<4))`
	`72`	`+ z= (((z&0xff00ff00ff00ff00)>>8)\| ((z&0x00ff00ff00ff00ff)<<8))`
	`73`	`+ z= (((z&0xffff0000ffff0000)>>16)\| ((z&0x0000ffff0000ffff)<<16))`
	`74`	`+ z= (((z&0xffffffff00000000)>>32)\| ((z&0x00000000ffffffff)<<32))`
	`75`	`+return z`
	`76`	`+end`
	`77`	`+`
	`78`	`+`
`65`	`79`	`function Base.permutedims(A::BitBlockArray{2, UInt64, Tuple{3,3}})`
`66`	`80`	`BitBlockArray{2, UInt64, Tuple{3,3}}(transpose_8x8bit(A.x))`
`67`	`81`	`end`
	`82`	`+`
	`83`	`+`
	`84`	`+function Base.rot180(A::BitBlockArray{2, UInt64, Tuple{3,3}})`
	`85`	`+#TODO would work for other sizes, too`
	`86`	`+BitBlockArray{2, UInt64, Tuple{3,3}}(revbits(A.x))`
	`87`	`+end`

Lines changed: 9 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -33,3 +33,12 @@ end`
`33`	`33`	`@testcollect(at)==collect(a)'`
`34`	`34`	`end`
`35`	`35`	`end`
	`36`	`+`
	`37`	`+@testset"8-by-8 rot180"begin`
	`38`	`+for i=0:64`
	`39`	`+ x=UInt64(0x1)<< i`
	`40`	`+ a=BitBlockArray(x,8,8)`
	`41`	`+`
	`42`	`+@testcollect(rot180(a))==rot180(collect(a))`
	`43`	`+end`
	`44`	`+end`

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