mathinline.h

它通过提供glibc兼容使得应用程序移植到较小的c 库时相当得容易. 它能够应用到带虚拟存储的Linux和uClinux上.在大多数带MMU部件的平台上为使它更加紧凑,它也能够编译成共享库.uClib

/* This file should provide inline versions of math functions.

   Surround GCC-specific parts with #ifdef __GNUC__, and use `extern __inline'.

   This file should define __MATH_INLINES if functions are actually defined as
   inlines.  */

#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__

/* Here goes the real code.  */

#endif