def _c(self, x, y, c, temp):
spu.and_(temp, x, y)
spu.cntb(temp, temp)
spu.sumb(temp, temp, 0)
spu.a(c, c, temp)
return
def _ab(self, x, y, ab, temp):
spu.xor(temp, x, y)
spu.cntb(temp, temp)
spu.sumb(temp, temp, 0)
spu.a(ab, ab, temp)
return
def popc(self, count, x):
"""
Add the number of 1 bits in each word in X to the value in count.
"""
temp = spu.get_active_code().acquire_register()
spu.cntb(temp, x)
spu.sumb(temp, temp, 0)
spu.a(count, count, temp)
spu.get_active_code().release_register(temp)
return
def popc(self, count, x):
"""
Add the number of 1 bits in each word in X to the value in count.
"""
temp = spu.get_active_code().acquire_register()
spu.cntb(temp, x)
spu.sumb(temp, temp, 0)
spu.a(count, count, temp)
spu.get_active_code().release_register(temp)
return
def _ab_c(self, x, y, ab, c, ab_temp, c_temp): """ Interleave ab and c computations """ spu.xor(ab_temp, x, y) spu.and_(c_temp, x, y) spu.cntb(ab_temp, ab_temp) spu.cntb(c_temp, c_temp) spu.sumb(ab_temp, ab_temp, 0) spu.sumb(c_temp, c_temp, 0) spu.a(ab, ab, ab_temp) spu.a(c, c, c_temp) return
