Creating arrays

import sf
import numpy as np

x = sf.array([0.1, -0.25, 0.5], dtype=sf.sf16)
x               # sfarray([ 0.1000061, -0.25     ,  0.5      ], dtype=sf16)
x.codes         # array([ 3277, -8192, 16384])
x.shape         # (3,)
x.dtype         # <class 'sf.sf16'>
x.device        # 'host'

sf.array([[0.1, 0.2], [0.3, 0.4]], dtype=sf.sf16)
# sfarray([[0.1000061 , 0.20001221],
#          [0.29998779, 0.3999939 ]], dtype=sf16)

sf.asarray(np.array([0.5, 0.25]), dtype=sf.sf8)
# sfarray([0.5 , 0.25], dtype=sf8)

sf.zeros((2, 3))                     # sf16 zeros; dtype defaults to sf16 here
sf.full((3,), 0.25, sf.sf16)         # sfarray([0.25, 0.25, 0.25], dtype=sf16)
sf.ones((2,))
# SFOverflowError: sf.ones: 1 is not representable in sf16 ...; use sf.full(shape, sf.info(sf.sf16).max, sf.sf16)

sf.from_codes([16384, -8192], sf.sf16)     # sfarray([ 0.5 , -0.25], dtype=sf16)

h = sf.asarray(x, device="atreides")
h.device        # 'atreides'
h.to("host")    # back to the host
h.numpy()       # floats on the host