static mp_int pow5[9];		/* Table of powers of 5**(2**n), up to
				 * 5**256 */
static double tiny = 0.0;	/* The smallest representable double. */
static int maxDigits;		/* The maximum number of digits to the left of
				 * the decimal point of a double. */
static int minDigits;		/* The maximum number of digits to the right
				 * of the decimal point in a double. */
static int mantDIGIT;		/* Number of mp_digit's needed to hold the
				 * significand of a double. */
static const double pow_10_2_n[] = {	/* Inexact higher powers of ten. */
    1.0,
    100.0,
    10000.0,
    1.0e+8,
    1.0e+16,
    1.0e+32,

     * the significand of a double.
     */

    maxDigits = (int) ((DBL_MAX_EXP * log((double) FLT_RADIX)
	    + 0.5 * log(10.)) / log(10.));
    minDigits = (int) floor((DBL_MIN_EXP - DBL_MANT_DIG)
	    * log((double) FLT_RADIX) / log(10.));
    mantDIGIT = (mantBits + DIGIT_BIT-1) / DIGIT_BIT;
    log10_DIGIT_MAX = (int) floor(DIGIT_BIT * log(2.) / log(10.));

    /*
     * Nokia 770's software-emulated floating point is "middle endian": the
     * bytes within a 32-bit word are little-endian (like the native
     * integers), but the two words of a 'double' are presented most
     * significant word first.