Timing for 10000000 complex.h cexp: 2864133ns Timing for 10000000 approximations: 1321049ns Approximation faster, speedup: 1543084ns (2.17x) Squared error in cosines (100000 runs): Average: 0.000051 (0.713743% error) Largest: 0.000174 (1.320551% error) Input: 0.729202 Value: -0.659428 Approximation: -0.672634 Squared error in sines (100000 runs): Average: 0.000070 (0.835334% error) Largest: 0.000288 (1.698413% error) Input: 0.842206 Value: 0.475669 Approximation: 0.458685