/* * Copyright 2012 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #if 0 // snippets that one day may be useful, unused for now... // get sign, exponent, mantissa from double // Translate the double into sign, exponent and mantissa. long bits = BitConverter.DoubleToInt64Bits(d); // Note that the shift is sign-extended, hence the test against -1 not 1 bool negative = (bits < 0); int exponent = (int) ((bits >> 52) & 0x7ffL); long mantissa = bits & 0xfffffffffffffL; // Subnormal numbers; exponent is effectively one higher, // but there's no extra normalisation bit in the mantissa if (exponent==0) { exponent++; } // Normal numbers; leave exponent as it is but add extra // bit to the front of the mantissa else { mantissa = mantissa | (1L<<52); } // Bias the exponent. It's actually biased by 1023, but we're // treating the mantissa as m.0 rather than 0.m, so we need // to subtract another 52 from it. exponent -= 1075; if (mantissa == 0) { return "0"; } /* Normalize */ while((mantissa & 1) == 0) { /* i.e., Mantissa is even */ mantissa >>= 1; exponent++; } #endif