replace boolean first with a C99 bool

diff --git a/lib/sparse/DotIO.c b/lib/sparse/DotIO.c
index 85d446f8c3d903f23963fc3bd5c2c626e01fe8c6..c07f6a1fde21a0d44419234664163a2d5acbee62 100644 (file)
--- a/lib/sparse/DotIO.c
+++ b/lib/sparse/DotIO.c
@@ -18,6 +18,7 @@
 #include <sparse/mq.h>
 #include <sparse/color_palette.h>
 #include <sparse/colorutil.h>
+#include <stdbool.h>
 #include <string.h>
 
 typedef struct {
@@ -490,7 +491,7 @@ makeDotGraph (SparseMatrix A, char *name, int dim, real *x, int with_color, int
   if (with_color){
     real maxdist = 0.;
     real mindist = 0.;
-    int first = TRUE;
+    bool first = true;
     color = malloc(sizeof(real)*A->nz);
     for (n = agfstnode (g); n; n = agnxtnode (g, n)) {
       i = ND_id(n);
@@ -500,7 +501,7 @@ makeDotGraph (SparseMatrix A, char *name, int dim, real *x, int with_color, int
          if (i != ja[j]){
            if (first){
              mindist = color[j];
-             first = FALSE;
+             first = false;
            } else {
              mindist = MIN(mindist, color[j]);
            }
@@ -513,7 +514,7 @@ makeDotGraph (SparseMatrix A, char *name, int dim, real *x, int with_color, int
          if (i != ja[j]){
            if (first){
              mindist = color[j];
-             first = FALSE;
+             first = false;
            } else {
              mindist = MIN(mindist, color[j]);
            }