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VCVTUDQ2PD
Converts an unsigned 64-bit integer (quadword) to a double-precision floating-point number.
The following table specifies the supported source and destination operands.
| source | destination(s) |
|---|---|
| m64 | f64 |
| x64 | f64 |
DO NOT support LOCK
This instruction is available in 64-bit mode. It is NOT supported in compatibility mode.
To avoid precision loss, be aware that since a double-precision floating-point format (f64) has a 53-bit significand, integers with a magnitude greater than $2^{53}$ MAY be rounded. The rounding is performed according to the rounding control bits in the MXCSR register.
The instruction MAY trigger the following exceptions based on the result of the conversion:
- #P: If the result requires rounding.