Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "double format" bit layout.
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
0x7ff8000000000000L.
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
doubleToLongBits (except all NaN values are
collapsed to a single "canonical" NaN value).
value | a double precision floating-point number. |
Diagram: Number