Example: On Windows, a sin() call usually goes into msvcrt.dll, and can thus return different results on different machines for the same binary. To name one pos

Example: On Windows, a sin() call usually goes into msvcrt.dll, and can thus return different results on different machines for the same binary. To name one possible reason: Different vectorization (due to different SSE support). Corollary: Don't link to the CRT sin/cos/etc. if you want your binary to give the same result on different machines.