Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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Getting the Best Performance from this Library

By far the most important thing you can do when using this library is turn on your compiler's optimisation options. As the following table shows the penalty for using the library in debug mode can be quite large.

Table 47. Performance Comparison of Release and Debug Settings

Function

Microsoft Visual C++ 8.0

Debug Settings: /Od /ZI

Microsoft Visual C++ 8.0

Release settings: /Ox /arch:SSE2

erf

16.65

(1.028e-006s)

1.00

(6.173e-008s)

erf_inv

19.28

(1.215e-006s)

1.00

(6.302e-008s)

ibeta and ibetac

8.32

(1.540e-005s)

1.00

(1.852e-006s)

ibeta_inv and ibetac_inv

10.25

(7.492e-005s)

1.00

(7.311e-006s)

ibeta_inva, ibetac_inva, ibeta_invb and ibetac_invb

8.57

(2.441e-004s)

1.00

(2.847e-005s)

gamma_p and gamma_q

10.98

(1.044e-005s)

1.00

(9.504e-007s)

gamma_p_inv and gamma_q_inv

10.25

(3.721e-005s)

1.00

(3.631e-006s)

gamma_p_inva and gamma_q_inva

11.26

(1.124e-004s)

1.00

(9.982e-006s)



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