DSP经典C语言程序库-非常有用

weixiaoHUST · 发表于 2011-12-13 17:05:11

sptest.c
/************************************************************************/
/*                            SPTEST.FOR                            */
/*          SIGNAL PROCESSING ALGORITHMS SUBPROGRAM TESTS          */
/*                      Source code in C                            */
/************************************************************************/
/* This program tests the subroutines and functions in SIGNAL PROCESSING */
/*  ALGORITHMS, Appendix A1.  In each test the message "passed" or */
/*  "failed" is printed after the name of the routine by the spout */
/*  subroutine at the end of this program. */
/* Each test checks for correct performance for a specific input, not for */
/*  all inputs, so the test is a check rather than a guarantee that the */
/*  routine is working correctly. */
/* A performance factor, Q, is computed as a function of the subroutine */
/*  output and compared with its correct value in the "spout" */
/*  statement.  For example, the correct value of Q in the test of the */
/*  SPFFTR subroutine is 8389.506.  A check sum of the data arrays in this */
/*  program is also computed, to assure that they remain intact. */
/* If a test fails, check the listings of both the subroutine and this */
/*  program against those in Appendix B1 of SIGNAL PROCESSING ALGORITHMS. */
/*  If the listings agree, make sure your compiler meets the C */
/*  standard.  Next, try printing the float value of Q for this test. */
/*  There may be a roundoff error.  If all else fails to yield a reason */
/*  for the failure, call John M.A. Salas at a reasonable hour. */