def c_to_f(c):
""" Given a value c in degrees celsius, this computes and returns
the equivalent temperature value in degrees fahrenheit.
"""
degrees = add(truediv(mul(c,9),5),32)
return forma.temp(degrees)
def f_to_c(f):
""" Given a value f in degrees fahrenheit, this computes and returns
the equivalent temperature value in degrees celsius.
"""
degrees = truediv(mul(sub(f,32.0),5.0),9.0)
return forma.temp(degrees)