def subtest_1():
'''Some specific test cases.'''
x = 2.718281828
#x = 0.01
# calculate for n=1..3
print('Calculations with recurrence formula...')
sc3a = sincos.sincos_calc_recur(x, 3)
sincos.sincos_print(x, 3, sc3a)
print('Calculations with explicit trig...')
sc3b = sincos.sincos_calc_trig(x, 3)
sincos.sincos_print(x, 3, sc3b)
# calculate for n=1..8
print('Recurrence for n=1..8...')
sc8 = sincos.sincos_calc_recur(x, 8)
sincos.sincos_print(x, 8, sc8)
# test case for n=1..8
print('Test case for n=1..8...')
sincos_all_subtest(x, 8, verbose=True)
# s*s + c*c = 1 test
sincos_check_unit(sc8, verbose=True)
def doit(x, n):
'''Calculate sin(i*x),cos(i*x) for i=1..n using recurrence formula.'''
sc = sincos.sincos_calc_recur(x, n)
sincos.sincos_print(x, n, sc)
return sc