67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
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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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Package("github.com/mmcloughlin/avo/examples/returns")
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// Multiple unnamed return values.
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TEXT("Interval", "func(start, size uint64) (uint64, uint64)")
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start := Load(Param("start"), GP64v())
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size := Load(Param("size"), GP64v())
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end := size
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ADDQ(start, end)
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Store(start, ReturnIndex(0))
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Store(end, ReturnIndex(1))
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RET()
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// Butterfly demonstrates multiple named return values.
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TEXT("Butterfly", "func(x0, x1 float64) (y0, y1 float64)")
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x0 := Load(Param("x0"), Xv())
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x1 := Load(Param("x1"), Xv())
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y0, y1 := Xv(), Xv()
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MOVSD(x0, y0)
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ADDSD(x1, y0)
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MOVSD(x0, y1)
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SUBSD(x1, y1)
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Store(y0, Return("y0"))
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Store(y1, Return("y1"))
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RET()
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// Septuple returns an array of seven of the given byte.
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TEXT("Septuple", "func(byte) [7]byte")
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b := Load(ParamIndex(0), GP8v())
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for i := 0; i < 7; i++ {
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Store(b, ReturnIndex(0).Index(i))
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}
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RET()
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// CriticalLine returns the complex value 0.5 + it on Riemann's critical line.
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TEXT("CriticalLine", "func(t float64) complex128")
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t := Load(Param("t"), Xv())
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half := Xv()
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MOVSD(ConstData("half", F64(0.5)), half)
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Store(half, ReturnIndex(0).Real())
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Store(t, ReturnIndex(0).Imag())
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RET()
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// NewStruct initializes a Struct value.
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TEXT("NewStruct", "func(w uint16, p [2]float64, q uint64) Struct")
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w := Load(Param("w"), GP16v())
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x := Load(Param("p").Index(0), Xv())
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y := Load(Param("p").Index(1), Xv())
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q := Load(Param("q"), GP64v())
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Store(w, ReturnIndex(0).Field("Word"))
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Store(x, ReturnIndex(0).Field("Point").Index(0))
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Store(y, ReturnIndex(0).Field("Point").Index(1))
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Store(q, ReturnIndex(0).Field("Quad"))
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RET()
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Generate()
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}
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