63 lines
1.0 KiB
Go
63 lines
1.0 KiB
Go
package tools
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import (
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"math"
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)
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func Sin(x float64) float64 {
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return (math.Sin(x * math.Pi / 180.00000))
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}
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func Cos(x float64) float64 {
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return (math.Cos(x * math.Pi / 180.00000))
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}
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func Tan(x float64) float64 {
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return (math.Tan(x * math.Pi / 180.00000))
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}
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func ArcSin(x float64) float64 {
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return (math.Asin(x) / math.Pi * 180.00000)
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}
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func ArcCos(x float64) float64 {
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return (math.Acos(x) / math.Pi * 180.00000)
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}
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func ArcTan(x float64) float64 {
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return (math.Atan(x) / math.Pi * 180.00000)
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}
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// ArcTan2 计算两个变量的反正切并转换为角度，处理所有象限
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func ArcTan2(y, x float64) float64 {
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angle := math.Atan2(y, x) * 180.0 / math.Pi
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if angle < 0 {
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angle += 360.0
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}
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return angle
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}
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func FloatRound(f float64, n int) float64 {
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p := math.Pow10(n)
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return math.Floor(f*p+0.5) / p
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}
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func Limit360(x float64) float64 {
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x = math.Mod(x, 360)
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if x < 0 {
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x += 360
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}
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return x
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}
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func FR(f float64) float64 {
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return FloatRound(f, 14)
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}
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func Abs(x int) int {
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if x < 0 {
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return -x
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}
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return x
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}
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