public static int fromFloat(float fval, bool littleEndian) { int fbits = FileOutput.SingleToInt32Bits(fval, littleEndian); int sign = fbits >> 16 & 0x8000; // sign only int val = (fbits & 0x7fffffff) + 0x1000; // rounded value if (val >= 0x47800000) // might be or become NaN/Inf { // avoid Inf due to rounding if ((fbits & 0x7fffffff) >= 0x47800000) { // is or must become NaN/Inf if (val < 0x7f800000) // was value but too large { return(sign | 0x7c00); // make it +/-Inf } return(sign | 0x7c00 | // remains +/-Inf or NaN (fbits & 0x007fffff) >> 13); // keep NaN (and Inf) bits } return(sign | 0x7bff); // unrounded not quite Inf } if (val >= 0x38800000) // remains normalized value { return(sign | val - 0x38000000 >> 13); // exp - 127 + 15 } if (val < 0x33000000) // too small for subnormal { return(sign); // becomes +/-0 } val = (fbits & 0x7fffffff) >> 23; // tmp exp for subnormal calc return(sign | ((fbits & 0x7fffff | 0x800000) // add subnormal bit + (0x800000 >> val - 102) // round depending on cut off >> 126 - val)); // div by 2^(1-(exp-127+15)) and >> 13 | exp=0 }