correct issue when using %f with 0

diff --git a/fdprintf.c b/fdprintf.c
index 1bc1b1907a0de6f82d320a015d562131c39cb7ad..6c06e038de3c897ae20b77c5a7d01221ed26ce5d 100644 (file)
--- a/fdprintf.c
+++ b/fdprintf.c
@@ -64,7 +64,7 @@ int fdprintf (int fd, const char *fmt, ...)
             *str++ = c;
         } else {
             int t = 0;
-           char w = '0';
+            char w = '0';
             int i, sz = 0;
             void *p = NULL;
 
@@ -97,6 +97,10 @@ int fdprintf (int fd, const char *fmt, ...)
                 break;
             case 'f': /* float */
                 f = va_arg (ap, double);
+                if (f == 0) {
+                    *str++ = '0';
+                    break;
+                }
                 if (f < 0) {
                     *str++ = '-';
                     f = -f;
@@ -110,7 +114,7 @@ int fdprintf (int fd, const char *fmt, ...)
                     f *= 10;
                     t--;
                 }
-               f += 1e-7;
+                f += 1e-7;
                 if (f >= 10) {
                     f /= 10;
                     t++;