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如果我在 C# 中有这段代码:

int index = 10;
float value = 20;

float* pixels = getPixelData();

pixels[index+1] = (byte)(value/256);
pixels[index+0] = (byte)(value & 0xFF);

然后,问题是如何计算“价值”,如果我有:

int index = 10;

pixels[index+1] = X;
pixels[index+0] = Y;

float value = ?
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