Comparisons and selection

import sf

a = sf.sf16(0.5)
a < sf.sf16(0.75)      # True
a < 1                  # True (always: every value is below 1)
a == 0.5               # True
sf.sf16(0.1) == 0.1    # False: the stored value is 3277/32768
a != 0.5               # False

bool(sf.sf16(0))       # False
bool(sf.sf16(0.5))     # True

sf.maximum(sf.sf16(0.5), sf.sf16(0.25))     # sf16(0.5)
sf.minimum(sf.sf16(0.5), sf.sf16(0.25))     # sf16(0.25)
sf.clip(sf.sf16(0.9), -0.5, 0.5)            # sf16(0.5)
sf.where(a > 0, a, sf.sf16(0))              # sf16(0.5)

b = sf.sf16(0)
sf.where(b != 0, sf.sf16(0.25) / sf.where(b != 0, b, sf.sf16(0.5)), sf.sf16(0))