Added a test for an edge case of float formatting and fixed a bug.

Author: pandr

Assets/DebugOverlay/TextFormatter.cs

@@ -43,7 +43,11 @@ void IConverter<float>.Convert(ref char* dst, char* end, float value, FormatSpec
  }
  int v1 = Mathf.FloorToInt(value);
  float fractMult = (int)Mathf.Pow(10.0f, formatSpec.fractWidth);
- int v2 = Mathf.RoundToInt(value * fractMult) % (int)(fractMult);
+ int v2 = Mathf.RoundToInt((value-(float)v1) * fractMult);
+ if(v2>=fractMult) {
+ v1++;
+ v2 = 0;
+ }
  ConvertInt(ref dst, end, neg ? -v1 : v1, intWidth, formatSpec.integerWidth, formatSpec.leadingZero);
  if (dst < end)
  *dst++ = '.';

Assets/DebugOverlay/TextFormatterTests.cs

@@ -43,6 +43,14 @@ public void Formats_Float_CustomPrecision()
  Assert.AreEqual("Value: 03.142", new string(buf, 0, len));
  }
 
+ [Test]
+ public void Formats_Float_CustomPrecision_2()
+ {
+ char[] buf = new char[32];
+ int len = StringFormatter.Write(ref buf, 0, "Value: {0:0.000}", 9.9995f);
+ Assert.AreEqual("Value: 10.000", new string(buf, 0, len));
+ }
+
  [Test]
  public void Formats_String_LeftAlign()
  {