From: Francois Fleuret <francois@fleuret.org>
Date: Sun, 7 Mar 2010 13:39:14 +0000 (+0100)
Subject: Simplified misc.h and misc.cc.
X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=commitdiff_plain;h=471b18a7f4e9cbdfb510f304260ec5e6baeee697;p=svrt.git

Simplified misc.h and misc.cc.
---

diff --git a/misc.cc b/misc.cc
index ddcaf6d..3affb33 100644
--- a/misc.cc
+++ b/misc.cc
@@ -27,68 +27,3 @@
 using namespace std;
 
 #include "misc.h"
-
-char *next_word(char *buffer, char *r, int buffer_size) {
-  char *s;
-  s = buffer;
-
-  if(r != 0) {
-    while((*r == ' ') || (*r == '\t') || (*r == ',')) r++;
-    if(*r == '"') {
-      r++;
-      while((*r != '"') && (*r != '\0') &&
-            (s<buffer+buffer_size-1))
-        *s++ = *r++;
-      if(*r == '"') r++;
-    } else {
-      while((*r != '\r') && (*r != '\n') && (*r != '\0') &&
-            (*r != '\t') && (*r != ' ') && (*r != ',')) {
-        if(s == buffer + buffer_size) {
-          cerr << "Buffer overflow in next_word." << endl;
-          exit(1);
-        }
-        *s++ = *r++;
-      }
-    }
-
-    while((*r == ' ') || (*r == '\t') || (*r == ',')) r++;
-    if((*r == '\0') || (*r=='\r') || (*r=='\n')) r = 0;
-  }
-  *s = '\0';
-
-  return r;
-}
-
-scalar_t discrete_entropy(int *n, int nb) {
-  scalar_t s = 0, t = 0;
-  for(int k = 0; k < nb; k++) if(n[k] > 0) {
-    s += n[k] * log(scalar_t(n[k]));
-    t += n[k];
-  }
-  return (log(t) - s/scalar_t(t))/log(2.0);
-}
-
-void random_permutation(int *val, int nb) {
-  for(int k = 0; k < nb; k++) val[k] = k;
-  int i, t;
-  for(int k = 0; k < nb - 1; k++) {
-    i = int(drand48() * (nb - k)) + k;
-    t = val[i];
-    val[i] = val[k];
-    val[k] = t;
-  }
-}
-
-void tag_subset(bool *val, int nb_total, int nb_to_tag) {
-  ASSERT(nb_to_tag <= nb_total);
-  int index[nb_total];
-  random_permutation(index, nb_total);
-  for(int n = 0; n < nb_total; n++) val[n] = false;
-  for(int n = 0; n < nb_to_tag; n++) val[index[n]] = true;
-}
-
-int compare_couple(const void *a, const void *b) {
-  if(((Couple *) a)->value < ((Couple *) b)->value) return -1;
-  else if(((Couple *) a)->value > ((Couple *) b)->value) return 1;
-  else return 0;
-}
diff --git a/misc.h b/misc.h
index e3dbab2..e101861 100644
--- a/misc.h
+++ b/misc.h
@@ -82,4 +82,16 @@ inline scalar_t log2(scalar_t x) {
   return log(x)/log(2.0);
 }
 
+template <class T>
+void grow(int *nb_max, int nb, T** current, int factor) {
+  ASSERT(*nb_max > 0);
+  if(nb == *nb_max) {
+    T *tmp = new T[*nb_max * factor];
+    memcpy(tmp, *current, *nb_max * sizeof(T));
+    delete[] *current;
+    *current = tmp;
+    *nb_max *= factor;
+  }
+}
+
 #endif