swap an unnecessary MAX call for fmax

diff --git a/lib/twopigen/circle.c b/lib/twopigen/circle.c
index 747e00a093bb2547d01f0b0a8b42192e58da20c8..cfd809f1bf2273102fd443c9310abae88d3bc798 100644 (file)
--- a/lib/twopigen/circle.c
+++ b/lib/twopigen/circle.c
@@ -12,6 +12,7 @@
 #include    <ctype.h>
 #include    <inttypes.h>
 #include    <limits.h>
+#include    <math.h>
 #include    <stdbool.h>
 #include    <stdint.h>
 #include    <stdlib.h>
@@ -289,7 +290,7 @@ getRankseps (Agraph_t* g, uint64_t maxrank)
 
     if ((p = late_string(g, agfindgraphattr(g->root, "ranksep"), NULL))) {
        while (rk <= maxrank && (d = strtod (p, &endp)) > 0) {
-           delx = MAX(d, MIN_RANKSEP);
+           delx = fmax(d, MIN_RANKSEP);
            xf += delx;
            ranks[rk++] = xf;
            p = endp;