46 lines
1 KiB
Go
46 lines
1 KiB
Go
/*
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Package math provides access to useful numeric functions available in Neo VM.
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*/
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package math
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import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"
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// Pow returns a^b using POW VM opcode.
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// b must be >= 0 and <= 2^31-1.
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func Pow(a, b int) int {
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return neogointernal.Opcode2("POW", a, b).(int)
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}
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// Sqrt returns a positive square root of x rounded down.
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func Sqrt(x int) int {
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return neogointernal.Opcode1("SQRT", x).(int)
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}
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// Sign returns:
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//
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// -1 if x < 0
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// 0 if x == 0
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// +1 if x > 0
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func Sign(a int) int {
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return neogointernal.Opcode1("SIGN", a).(int)
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}
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// Abs returns an absolute value of a.
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func Abs(a int) int {
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return neogointernal.Opcode1("ABS", a).(int)
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}
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// Max returns the maximum of a, b.
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func Max(a, b int) int {
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return neogointernal.Opcode2("MAX", a, b).(int)
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}
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// Min returns the minimum of a, b.
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func Min(a, b int) int {
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return neogointernal.Opcode2("MIN", a, b).(int)
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}
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// Within returns true if a <= x < b.
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func Within(x, a, b int) bool {
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return neogointernal.Opcode3("WITHIN", x, a, b).(bool)
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}
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