compiles clean with lots of -W switches

test/Makefile

@@ -1,3 +1,9 @@
+
+WARNINGS=-W -Wall -Wstrict-prototypes -Wmissing-prototypes -Waggregate-return \
+    -Wcast-align -Wcast-qual -Wnested-externs -Wshadow -Wbad-function-cast \
+    -Wwrite-strings
+
+
 ifeq "$(NFFT)" ""
  NFFT=1800
 endif
@@ -42,7 +48,7 @@ tools:
 # for x86 pentium+ machines , these flags work well
 #CFLAGS=-Wall -O3 -pedantic -march=pentiumpro -ffast-math -fomit-frame-pointer   -I.. -I../tools
 # If the above flags do not work, try the following
-CFLAGS=-Wall -O3 -I.. -I../tools
+CFLAGS=-Wall -O3 -I.. -I../tools $(WARNINGS)
 
 $(SELFTEST): $(SELFTESTSRC) $(SRCFILES)
 	$(CC) -o $@ $(CFLAGS) $(TYPEFLAGS) -lm $+

test/pstats.c

@@ -4,16 +4,19 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include "pstats.h"
+
 static struct tms tms_beg;
 static struct tms tms_end;
 static int has_times = 0;
 
-void pstats_init()
+
+void pstats_init(void)
 {
     has_times = times(&tms_beg) != -1;
 }
 
-static void tms_report()
+static void tms_report(void)
 {
     double cputime;
     if (! has_times )
@@ -25,7 +28,7 @@ static void tms_report()
     fprintf(stderr,"\tcputime=%.3f\n" , cputime);
 }
 
-static void ps_report()
+static void ps_report(void)
 {
     char buf[1024];
 #ifdef __APPLE__ /*  MAC OS X */

test/pstats.h

@@ -1,7 +1,7 @@
 #ifndef PSTATS_H
 #define PSTATS_H
 
-void pstats_init();
-void pstats_report();
+void pstats_init(void);
+void pstats_report(void);
  
 #endif

test/selftest.c

@@ -4,6 +4,7 @@
 
 #define xstr(s) str(s)
 #define str(s) #s
+static 
 double snr_compare( kiss_fft_cpx * test_vec_out,kiss_fft_cpx * testbuf, int n)
 {
     int k;
@@ -28,10 +29,11 @@ double snr_compare( kiss_fft_cpx * test_vec_out,kiss_fft_cpx * testbuf, int n)
     return snr;
 }
 
-int test_stride();
-int test2d();
+int test_stride(void );
+int test2d(void );
 
-int main() { int exit_code=0;
+int main(void) { 
+    int exit_code=0;
 
 #define NFFT 10
     {
@@ -143,6 +145,7 @@ int main() { int exit_code=0;
     return exit_code;
 }
 
+
 int test_stride()
 {
 #define SKIP_FACTOR 7

test/selftest_short.c

@@ -2,6 +2,8 @@
 
 #define xstr(s) str(s)
 #define str(s) #s
+
+static
 double snr_compare( kiss_fft_cpx * test_vec_out,kiss_fft_cpx * testbuf, int n)
 {
     int k;
@@ -26,7 +28,7 @@ double snr_compare( kiss_fft_cpx * test_vec_out,kiss_fft_cpx * testbuf, int n)
     return snr;
 }
 
-int main() { int exit_code=0;
+int main(void) { int exit_code=0;
 
 #define NFFT 10
     {

test/test_real.c

@@ -4,13 +4,14 @@
 #include <time.h>
 #include <unistd.h>
 
-static double cputime()
+static double cputime(void)
 {
     struct tms t;
     times(&t);
     return (double)(t.tms_utime + t.tms_stime)/  sysconf(_SC_CLK_TCK) ;
 }
 
+static
 double snr_compare( kiss_fft_cpx * vec1,kiss_fft_cpx * vec2, int n)
 {
     int k;
@@ -52,12 +53,12 @@ double snr_compare( kiss_fft_cpx * vec1,kiss_fft_cpx * vec2, int n)
 #endif
 
 
-int main()
+int main(void)
 {
     double ts,tfft,trfft;
     int i;
     kiss_fft_cpx cin[NFFT];
-    kiss_fft_scalar sin[NFFT] = {0.309655,0.815653,0.768570,0.591841,0.404767,0.637617,0.007803,0.012665};
+    kiss_fft_scalar rin[NFFT] = {0.309655,0.815653,0.768570,0.591841,0.404767,0.637617,0.007803,0.012665};
     kiss_fft_cpx cout[NFFT];
     kiss_fft_cpx sout[NFFT];
     
@@ -68,16 +69,16 @@ int main()
 
     for (i=0;i<NFFT;++i) {
 #ifdef RANDOM        
-        sin[i] = (kiss_fft_scalar)(rand()-RAND_MAX/2);
+        rin[i] = (kiss_fft_scalar)(rand()-RAND_MAX/2);
 #endif        
-        cin[i].r = sin[i];
+        cin[i].r = rin[i];
         cin[i].i = 0;
     }
 
     kiss_fft_state = kiss_fft_alloc(NFFT,0,0,0);
     kiss_fftr_state = kiss_fftr_alloc(NFFT,0,0,0);
     kiss_fft(kiss_fft_state,cin,cout);
-    kiss_fftr(kiss_fftr_state,sin,sout);
+    kiss_fftr(kiss_fftr_state,rin,sout);
     printf( "nfft=%d, inverse=%d, snr=%g\n",
             NFFT,0, snr_compare(cout,sout,(NFFT/2)+1) );
 #ifdef RANDOM        
@@ -89,8 +90,8 @@ int main()
     
     ts = cputime();
     for (i=0;i<NUMFFTS;++i) {
-        kiss_fftr( kiss_fftr_state, sin, cout );
-        /* kiss_fftri(kiss_fftr_state,cout,sin); */
+        kiss_fftr( kiss_fftr_state, rin, cout );
+        /* kiss_fftri(kiss_fftr_state,cout,rin); */
     }
     trfft = cputime() - ts;
 
@@ -103,10 +104,10 @@ int main()
     kiss_fftr_state = kiss_fftr_alloc(NFFT,1,0,0);
 
     kiss_fft(kiss_fft_state,cout,cin);
-    kiss_fftri(kiss_fftr_state,cout,sin);
+    kiss_fftri(kiss_fftr_state,cout,rin);
 
     for (i=0;i<NFFT;++i) {
-        sout[i].r = sin[i];
+        sout[i].r = rin[i];
         sout[i].i = 0;
     }