# test vsqrt, vneg
@micropython.asm_thumb # r0 = -(int)(sqrt(r0)*r1)
def sqrt_test(r0, r1):
vmov(s1, r0)
vcvt_f32_s32(s1, s1)
vsqrt(s1, s1)
vmov(s2, r1)
vcvt_f32_s32(s2, s2)
vmul(s0, s1, s2)
vneg(s7, s0)
vcvt_s32_f32(s31, s7)
vmov(r0, s31)
print(sqrt_test(256, 10))