core/vm/sqlvm/common/decimal/decimal.go


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package decimal

import (
    "fmt"
    "math"

    "github.com/dexon-foundation/decimal"
)

// Shared vars.
var (
    False = decimal.New(0, 0)
    True  = decimal.New(1, 0)

    MaxInt64 = decimal.New(math.MaxInt64, 0)
    MinInt64 = decimal.New(math.MinInt64, 0)

    MaxUint16 = decimal.New(math.MaxUint16, 0)
    MaxUint64 = decimal.RequireFromString(fmt.Sprint(uint64(math.MaxUint64)))

    Dec257 = decimal.New(257, 0)
)

// Val2Bool convert value to boolean definition.
func Val2Bool(v decimal.Decimal) decimal.Decimal {
    if v.IsZero() {
        return False
    }
    return True
}

// IsTrue returns given value is decimal defined True in golang boolean.
func IsTrue(v decimal.Decimal) bool {
    return v.Cmp(True) == 0
}

// IsFalse returns given value is decimal defined False in golang boolean.
func IsFalse(v decimal.Decimal) bool {
    return v.Cmp(False) == 0
}