public static

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