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testcase for 32-bit pulse encoding/decoding

--- a/tests/Makefile.am

+++ b/tests/Makefile.am

@@ -1,8 +1,12 @@

 INCLUDES = -I$(top_srcdir)/libcelt

 METASOURCES = AUTO

-TESTS = ectest

+TESTS = ectest cwrs32-test

-bin_PROGRAMS = ectest

+bin_PROGRAMS = ectest cwrs32-test

+

 ectest_SOURCES = ectest.c

 ectest_LDADD = $(top_builddir)/libcelt/libcelt.la

+

+cwrs32_test_SOURCES = cwrs32-test.c

+cwrs32_test_LDADD = $(top_builddir)/libcelt/libcelt.la

--- /dev/null

+++ b/tests/cwrs32-test.c

@@ -1,0 +1,46 @@

+#include <stdio.h>

+#include "cwrs.h"

+

+#define NMAX (10)

+#define MMAX (9)

+

+int main(int _argc,char **_argv){

+  int n;

+  for(n=0;n<=NMAX;n++){

+    int m;

+    for(m=0;m<=MMAX;m++){

+      unsigned nc;

+      unsigned i;

+      nc=ncwrs(n,m);

+      for(i=0;i<nc;i++){

+        int x[MMAX];

+        int s[MMAX];

+        int x2[MMAX];

+        int s2[MMAX];

+        int y[NMAX];

+        int j;

+        int k;

+        cwrsi(n,m,i,x,s);

+        /*printf("%6u of %u:",i,nc);*/

+        /*for(k=0;k<m;k++){

+          printf(" %c%i",k>0&&x[k]==x[k-1]?' ':s[k]?'-':'+',x[k]);

+        }

+        printf(" ->");*/

+        if(icwrs(n,m,x,s)!=i){

+          fprintf(stderr,"Combination-index mismatch.\n");

+          return 1;

+        }

+        comb2pulse(n,m,y,x,s);

+        /*for(j=0;j<n;j++)printf(" %c%i",y[j]?y[j]<0?'-':'+':' ',abs(y[j]));

+        printf("\n");*/

+        pulse2comb(n,m,x2,s2,y);

+        for(k=0;k<m;k++)if(x[k]!=x2[k]||s[k]!=s2[k]){

+          fprintf(stderr,"Pulse-combination mismatch.\n");

+          return 1;

+        }

+      }

+      /*printf("\n");*/

+    }

+  }

+  return 0;

+}

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