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Examples of errors detected by the V304…

# Examples of errors detected by the V3041 diagnostic

April 5, 2021

V3041. The expression was implicitly cast from integer type to real type. Consider utilizing an explicit type cast to avoid the loss of a fractional part.

## Sony ATF

V3041 The expression was implicitly cast from 'int' type to 'float' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. Atf.Gui.OpenGL.vs2010 ArcBallCameraController.cs 216

``````
private Vec3F ProjectToArcball(Point point)
{
float x = (float)point.X / (m_width / 2);   // <=

float y = (float)point.Y / (m_height / 2);  // <=

x = x - 1;
y = 1 - y;
if (x < -1)
x = -1;
else if (x > 1)
x = 1;
if (y < -1)
y = -1;
else if (y > 1)
y = 1;
....
}
``````

Similar errors can be found in some other places:

• V3041 The expression was implicitly cast from 'int' type to 'float' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. Atf.Gui.OpenGL.vs2010 ArcBallCameraController.cs 217

## Xenko

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. SiliconStudio.TextureConverter AtlasTexLibrary.cs 422

``````
private void QuickSort(List<TexImage> list, int left, int right)
{
int i = left;
int j = right;
double pivotValue = ((left + right) / 2);
int x = list[(int)pivotValue].DataSize;
....
}
``````

## Accord.Net

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. Accord.Audio Tools.cs 158

``````
public static double GetSpectralResolution(int samplingRate,
int samples)
{
return samplingRate / samples;
}
``````

## Accord.Net

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. Accord.Math Tools.cs 137

``````
public static int GreatestCommonDivisor(int a, int b)
{
int x = a - b * (int)Math.Floor((double)(a / b));
while (x != 0)
{
a = b;
b = x;
x = a - b * (int)Math.Floor((double)(a / b));
}
return b;
}
``````

Similar errors can be found in some other places:

• V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. Accord.Math Tools.cs 142

## MSBuild

V3041 The expression was implicitly cast from 'long' type to 'float' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. CommunicationsUtilities.cs 615

``````
private static long s_lastLoggedTicks = DateTime.UtcNow.Ticks;
....
internal static void Trace(....)
{
....
long now = DateTime.UtcNow.Ticks;

float millisecondsSinceLastLog =
(float)((now - s_lastLoggedTicks)/10000L);
....
}
``````

## Infer.NET

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. LDA Utilities.cs 74

``````
public static void CreateTrueThetaAndPhi(....)
{
....
double expectedRepeatOfTopicInDoc = averageDocLength / numUniqueTopicsPerDoc;
....
int cnt = Poisson.Sample(expectedRepeatOfTopicInDoc);
....
}
``````

## Infer.NET

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. Runtime ProductExp.cs 137

``````
public static NonconjugateGaussian BAverageLogarithm(....)
{
....
double v_opt = 2 / 3 * (Math.Log(mx * mz / Ex2 / 2) - m);
if (v_opt != v)
{
....
}
....
}
``````

## ShareX

V3041 [CWE-682] The expression was implicitly cast from 'int' type to 'float' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. ImageHelpers.cs 1119

``````
public static void Pixelate(Bitmap bmp, int pixelSize)
{
....
float r = 0, g = 0, b = 0, a = 0;
float weightedCount = 0;

for (int y2 = y; y2 < yLimit; y2++)
{
for (int x2 = x; x2 < xLimit; x2++)
{
ColorBgra color = unsafeBitmap.GetPixel(x2, y2);

float pixelWeight = color.Alpha / 255; // <=

r += color.Red * pixelWeight;
g += color.Green * pixelWeight;
b += color.Blue * pixelWeight;
a += color.Alpha * pixelWeight;

weightedCount += pixelWeight;
}
}
....
ColorBgra averageColor = new ColorBgra((byte)(b / weightedCount),
(byte)(g / weightedCount), (byte)(r / weightedCount),
(byte)(a / pixelCount));
....
}
``````

## Emby

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. LiveTvManager.cs 1085

``````
{
....
double progressPerService = _services.Length == 0
? 0
: 1 / _services.Length;
....
}
``````

## RunUO

V3041 The expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;. StormsEye.cs 87

``````
public static void Gain( Mobile from, Skill skill )
{
....
if ( from.Player &&
( skills.Total / skills.Cap ) >= Utility.RandomDouble())
....
}
``````

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