The `fcvt.s.w` instruction converts a 32-bit signed integer in integer register `xs1` into a floating-point number in floating-point register `fd`. All floating-point to integer and integer to floating-point conversion instructions round according to the `rm` field. A floating-point register can be initialized to floating-point positive zero using `fcvt.s.w fd, x0`, which will never set any exception flags. All floating-point conversion instructions set the Inexact exception flag if the rounded result differs from the operand value and the Invalid exception flag is not set.
fcvt.s.w fd, xs1, rmType: