def execute_trunc_w_s(s, inst):
# TODO: check for overflow
x = bits2float(s.rf[inst.fs()])
s.rf[inst.fd()] = trim(int(x)) # round down
s.pc += 4
def execute_c_le_s(s, inst):
a = bits2float(s.rf[inst.fs()])
b = bits2float(s.rf[inst.ft()])
s.rf[inst.fd()] = 1 if a <= b else 0
s.pc += 4
def execute_cvt_w_s(s, inst):
x = bits2float(s.rf[inst.fs()])
s.rf[inst.fd()] = trim(int(x))
s.pc += 4
def execute_div_s(s, inst):
a = bits2float(s.rf[inst.fs()])
b = bits2float(s.rf[inst.ft()])
s.rf[inst.fd()] = float2bits(a / b)
s.pc += 4