The Standard C Library P. J. Plauger
Publisher: Prentice Hall

To demonstrate how much better off you can be by using standard library algorithms instead of handcrafting your own, let's reconsider the previous question to demonstrate how many of the problems could have been avoided by simply reusing what's already available . The Standard C Library for Linux, Part Four: Character Handling. Why can't the latter just use the log of the former? The GNU C Library (glibc) is the standard C library on Linux Systems. Let's revisit the benchmark again. "I optimized the NaN check" is not something I want to be around to hear. But even if I'm restricting to STL like containers in the C++11 version, it is highly preferable than repeating the type of what is stored in emps (perhaps const decltype(*begin(emps))& would be better ? The last article was on Input and Output. Section 7.12.3.4 of the C standard, right there, standard library, no need for shenanigans. Among the most challenging problems in a financial system is dealing with numeric precision. Since then the boost threading library has been rewritten and C++11 has introduced the threading support in the standard library. Fortunately for us, some authors managed to write books even before C++11 is well "domesticated". The standard C math library has two functions related to the gamma function: tgamma that returns Γ(x) and lgamma that return log Γ(x). We are still waiting for some more books about new C++ standard. This article is on character handling.