289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
325 lines
6.5 KiB
Go
325 lines
6.5 KiB
Go
package otto
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import (
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"fmt"
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"math"
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"regexp"
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"strconv"
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"strings"
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)
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var stringToNumberParseInteger = regexp.MustCompile(`^(?:0[xX])`)
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func parseNumber(value string) float64 {
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value = strings.TrimSpace(value)
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if value == "" {
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return 0
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}
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parseFloat := false
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if strings.IndexRune(value, '.') != -1 {
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parseFloat = true
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} else if stringToNumberParseInteger.MatchString(value) {
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parseFloat = false
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} else {
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parseFloat = true
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}
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if parseFloat {
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number, err := strconv.ParseFloat(value, 64)
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if err != nil && err.(*strconv.NumError).Err != strconv.ErrRange {
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return math.NaN()
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}
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return number
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}
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number, err := strconv.ParseInt(value, 0, 64)
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if err != nil {
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return math.NaN()
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}
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return float64(number)
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}
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func (value Value) float64() float64 {
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switch value.kind {
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case valueUndefined:
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return math.NaN()
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case valueNull:
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return 0
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}
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switch value := value.value.(type) {
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case bool:
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if value {
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return 1
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}
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return 0
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case int:
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return float64(value)
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case int8:
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return float64(value)
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case int16:
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return float64(value)
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case int32:
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return float64(value)
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case int64:
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return float64(value)
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case uint:
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return float64(value)
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case uint8:
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return float64(value)
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case uint16:
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return float64(value)
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case uint32:
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return float64(value)
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case uint64:
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return float64(value)
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case float64:
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return value
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case string:
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return parseNumber(value)
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case *_object:
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return value.DefaultValue(defaultValueHintNumber).float64()
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}
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panic(fmt.Errorf("toFloat(%T)", value.value))
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}
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const (
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float_2_64 float64 = 18446744073709551616.0
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float_2_63 float64 = 9223372036854775808.0
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float_2_32 float64 = 4294967296.0
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float_2_31 float64 = 2147483648.0
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float_2_16 float64 = 65536.0
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integer_2_32 int64 = 4294967296
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integer_2_31 int64 = 2146483648
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sqrt1_2 float64 = math.Sqrt2 / 2
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)
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const (
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maxInt8 = math.MaxInt8
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minInt8 = math.MinInt8
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maxInt16 = math.MaxInt16
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minInt16 = math.MinInt16
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maxInt32 = math.MaxInt32
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minInt32 = math.MinInt32
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maxInt64 = math.MaxInt64
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minInt64 = math.MinInt64
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maxUint8 = math.MaxUint8
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maxUint16 = math.MaxUint16
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maxUint32 = math.MaxUint32
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maxUint64 = math.MaxUint64
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maxUint = ^uint(0)
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minUint = 0
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maxInt = int(^uint(0) >> 1)
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minInt = -maxInt - 1
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// int64
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int64_maxInt int64 = int64(maxInt)
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int64_minInt int64 = int64(minInt)
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int64_maxInt8 int64 = math.MaxInt8
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int64_minInt8 int64 = math.MinInt8
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int64_maxInt16 int64 = math.MaxInt16
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int64_minInt16 int64 = math.MinInt16
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int64_maxInt32 int64 = math.MaxInt32
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int64_minInt32 int64 = math.MinInt32
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int64_maxUint8 int64 = math.MaxUint8
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int64_maxUint16 int64 = math.MaxUint16
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int64_maxUint32 int64 = math.MaxUint32
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// float64
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float_maxInt float64 = float64(int(^uint(0) >> 1))
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float_minInt float64 = float64(int(-maxInt - 1))
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float_minUint float64 = float64(0)
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float_maxUint float64 = float64(uint(^uint(0)))
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float_minUint64 float64 = float64(0)
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float_maxUint64 float64 = math.MaxUint64
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float_maxInt64 float64 = math.MaxInt64
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float_minInt64 float64 = math.MinInt64
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)
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func toIntegerFloat(value Value) float64 {
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float := value.float64()
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if math.IsInf(float, 0) {
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} else if math.IsNaN(float) {
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float = 0
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} else if float > 0 {
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float = math.Floor(float)
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} else {
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float = math.Ceil(float)
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}
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return float
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}
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type _numberKind int
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const (
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numberInteger _numberKind = iota // 3.0 => 3.0
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numberFloat // 3.14159 => 3.0, 1+2**63 > 2**63-1
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numberInfinity // Infinity => 2**63-1
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numberNaN // NaN => 0
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)
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type _number struct {
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kind _numberKind
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int64 int64
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float64 float64
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}
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// FIXME
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// http://www.goinggo.net/2013/08/gustavos-ieee-754-brain-teaser.html
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// http://bazaar.launchpad.net/~niemeyer/strepr/trunk/view/6/strepr.go#L160
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func (value Value) number() (number _number) {
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switch value := value.value.(type) {
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case int8:
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number.int64 = int64(value)
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return
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case int16:
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number.int64 = int64(value)
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return
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case uint8:
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number.int64 = int64(value)
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return
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case uint16:
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number.int64 = int64(value)
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return
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case uint32:
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number.int64 = int64(value)
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return
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case int:
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number.int64 = int64(value)
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return
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case int64:
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number.int64 = value
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return
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}
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float := value.float64()
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if float == 0 {
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return
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}
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number.kind = numberFloat
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number.float64 = float
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if math.IsNaN(float) {
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number.kind = numberNaN
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return
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}
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if math.IsInf(float, 0) {
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number.kind = numberInfinity
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}
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if float >= float_maxInt64 {
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number.int64 = math.MaxInt64
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return
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}
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if float <= float_minInt64 {
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number.int64 = math.MinInt64
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return
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}
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integer := float64(0)
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if float > 0 {
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integer = math.Floor(float)
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} else {
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integer = math.Ceil(float)
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}
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if float == integer {
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number.kind = numberInteger
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}
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number.int64 = int64(float)
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return
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}
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// ECMA 262: 9.5
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func toInt32(value Value) int32 {
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{
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switch value := value.value.(type) {
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case int8:
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return int32(value)
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case int16:
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return int32(value)
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case int32:
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return value
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}
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}
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floatValue := value.float64()
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if math.IsNaN(floatValue) || math.IsInf(floatValue, 0) {
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return 0
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}
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if floatValue == 0 { // This will work for +0 & -0
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return 0
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}
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remainder := math.Mod(floatValue, float_2_32)
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if remainder > 0 {
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remainder = math.Floor(remainder)
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} else {
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remainder = math.Ceil(remainder) + float_2_32
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}
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if remainder > float_2_31 {
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return int32(remainder - float_2_32)
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}
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return int32(remainder)
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}
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func toUint32(value Value) uint32 {
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{
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switch value := value.value.(type) {
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case int8:
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return uint32(value)
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case int16:
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return uint32(value)
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case uint8:
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return uint32(value)
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case uint16:
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return uint32(value)
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case uint32:
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return value
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}
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}
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floatValue := value.float64()
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if math.IsNaN(floatValue) || math.IsInf(floatValue, 0) {
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return 0
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}
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if floatValue == 0 {
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return 0
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}
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remainder := math.Mod(floatValue, float_2_32)
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if remainder > 0 {
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remainder = math.Floor(remainder)
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} else {
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remainder = math.Ceil(remainder) + float_2_32
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}
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return uint32(remainder)
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}
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func toUint16(value Value) uint16 {
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{
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switch value := value.value.(type) {
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case int8:
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return uint16(value)
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case uint8:
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return uint16(value)
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case uint16:
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return value
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}
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}
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floatValue := value.float64()
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if math.IsNaN(floatValue) || math.IsInf(floatValue, 0) {
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return 0
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}
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if floatValue == 0 {
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return 0
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}
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remainder := math.Mod(floatValue, float_2_16)
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if remainder > 0 {
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remainder = math.Floor(remainder)
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} else {
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remainder = math.Ceil(remainder) + float_2_16
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}
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return uint16(remainder)
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}
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