fcvt.d.s
Floating-Point Convert Single-Precision to Double-Precision
This instruction is defined by:
Synopsis
The single-precision to double-precision conversion instruction, fcvt.d.s is encoded in the OP-FP
major opcode space and both the source and destination are floating-point registers. The xs2 field
encodes the datatype of the source, and the fmt field encodes the datatype of the destination.
fcvt.d.s will never round.