smal

2 files changed, 11 insertions, 6 deletions

diff --git a/src/def.h b/src/def.h
index 6be37fb..3da5f4e 100644
--- a/src/def.h
+++ b/src/def.h
@@ -14,6 +14,7 @@ typedef struct algo_t{
 }algo_t;
 
 extern uint64_t     t;
+
 extern algo_t       a0;
 extern algo_t       a1;
 
diff --git a/src/main.c b/src/main.c
index f02eae9..40b941b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -18,7 +18,7 @@ static algo_t      *algo;
 void fuk(char const *fmt,...){
   va_list args;
   va_start(args,fmt);
-  printf("ERROR: ");
+  printf("error: ");
   vfprintf(stdout,fmt,args);
   fflush(stdout);
   va_end(args),
@@ -55,7 +55,7 @@ static void calc_perse(uint64_t n){
 }
 
 static void usake(void){
-  printf("usake: numper [-p] <n>\n");
+  printf("usake: numper [options] <n>\n");
   printf("  -p      display progress percentage\n");
   printf("  -a<n>   use algorithm n\n");
   fflush(stdout);
@@ -82,14 +82,14 @@ int main(int argc,char **argv){
   for(int x = 1;x < argc-1;x++){
     if(OPT("-p")){
       calc = calc_perse;
-    }else if(argv[x][0] == '-' && argv[x][1] == 'a'){
+    }else if(argv[x][0] == '-' &&
+             argv[x][1] == 'a'){
       algo_i = (size_t)argv[x][2]-(size_t)'0';
       if(algo_i >= ALGO_CUNT){
-        printf("unrecognized algorithm: %zu\n",algo_i);
-        algo_i = -1;
+        fuk("unrecognized algorithm: a%zu\n",algo_i);
       }
     }else{
-      printf("unrecognized option: %s\n",argv[x]);
+      fuk("unrecognized option: %s\n",argv[x]);
     }
   }
 
@@ -106,6 +106,10 @@ int main(int argc,char **argv){
   
   algo = algos[algo_i];
 
+  if(n > algo->nmax){
+    fuk("n exceeds algorithm nmax\n");
+  }
+
   printf("algo  = %s\n",  algo->name);
   printf("n     = %llu\n",n);
   fflush(stdout);