Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "double format" bit layout, preserving Not-a-Number (NaN) values.
Bit 63 (the bit that is selected by the mask
0x8000000000000000L) represents the sign of the
floating-point number. Bits
62-52 (the bits that are selected by the mask
0x7ff0000000000000L) represent the exponent. Bits 51-0
(the bits that are selected by the mask
0x000fffffffffffffL) represent the significand
(sometimes called the mantissa) of the floating-point number.
If the argument is positive infinity, the result is
0x7ff0000000000000L.
If the argument is negative infinity, the result is
0xfff0000000000000L.
If the argument is NaN, the result is the long
integer representing the actual NaN value. Unlike the
doubleToLongBits method,
doubleToRawLongBits does not collapse all the bit
patterns encoding a NaN to a single "canonical" NaN
value.
In all cases, the result is a long integer that,
when given to the longBitsToDouble(long) method, will
produce a floating-point value the same as the argument to
doubleToRawLongBits.
value | a double precision floating-point number. |
Diagram: Number