45 lines
986 B
C#
45 lines
986 B
C#
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using System;
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namespace GraphLib
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{
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public class Utilities
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{
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/// <summary>
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/// returns the most significant decimal digit
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/// 250 -> 100
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/// 350 -> 100
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/// 12 -> 10
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/// 5 -> 1
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/// 0.5 .> 0.1
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/// .....
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/// </summary>
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/// <param name="Value"></param>
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/// <returns></returns>
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static public float MostSignificantDigit(float Value)
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{
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float n = 1;
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float val_abs = Math.Abs(Value);
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float sig = 1.0f * Math.Sign(Value);
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if (val_abs > 1)
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{
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while (n < val_abs)
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{
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n *= 10.0f;
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}
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return (float)((int)(sig * n / 10));
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}
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else // n <= 1
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{
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while (n > val_abs)
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{
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n /= 10.0f;
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}
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return sig * n;
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}
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}
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}
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}
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