9c70781236
Bump CI Go versions to 1.16 and 1.17. Update build tags with `go:build` equivalents. Upgrade asmfmt tool for new `go:build` support. Updates #183
43 lines
896 B
Go
43 lines
896 B
Go
//go:build ignore
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// +build ignore
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package main
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import (
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. "github.com/mmcloughlin/avo/build"
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. "github.com/mmcloughlin/avo/operand"
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)
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func main() {
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TEXT("EncodeInt", NOSPLIT, "func(lat, lng float64) uint64")
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Doc("EncodeInt computes the 64-bit integer geohash of (lat, lng).")
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lat := Load(Param("lat"), XMM())
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lng := Load(Param("lng"), XMM())
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MULSD(ConstData("reciprocal180", F64(1/180.0)), lat)
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onepointfive := ConstData("onepointfive", F64(1.5))
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ADDSD(onepointfive, lat)
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MULSD(ConstData("reciprocal360", F64(1/360.0)), lng)
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ADDSD(onepointfive, lng)
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lngi, lati := GP64(), GP64()
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MOVQ(lat, lati)
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SHRQ(U8(20), lati)
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MOVQ(lng, lngi)
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SHRQ(U8(20), lngi)
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mask := ConstData("mask", U64(0x5555555555555555))
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ghsh := GP64()
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PDEPQ(mask, lati, ghsh)
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temp := GP64()
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PDEPQ(mask, lngi, temp)
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SHLQ(U8(1), temp)
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XORQ(temp, ghsh)
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Store(ghsh, ReturnIndex(0))
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RET()
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Generate()
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}
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