public static float ToFloat(int imm16)
{
var s = (imm16 >> 15) & 0x00000001; // Sign
var e = (imm16 >> 10) & 0x0000001f; // Exponent
var f = (imm16 >> 0) & 0x000003ff; // Fraction
// Need to handle 0x7C00 INF and 0xFC00 -INF?
if (e == 0)
{
// Need to handle +-0 case f==0 or f=0x8000?
if (f == 0)
{
// Plus or minus zero
return(MathFloat.ReinterpretIntAsFloat(s << 31));
}
// Denormalized number -- renormalize it
while ((f & 0x00000400) == 0)
{
f <<= 1;
e -= 1;
}
e += 1;
f &= ~0x00000400;
}
else if (e == 31)
{
if (f == 0)
{
// Inf
return(MathFloat.ReinterpretIntAsFloat((s << 31) | 0x7f800000));
}
// NaN
return(MathFloat.ReinterpretIntAsFloat((s << 31) | 0x7f800000 | (f << 13)));
}
e = e + (127 - 15);
f = f << 13;
return(MathFloat.ReinterpretIntAsFloat((s << 31) | (e << 23) | f));
}
