1 files changed, 17 insertions, 0 deletions
diff --git a/util.c b/util.c
index e9ec591..f6a3d91 100644
--- a/util.c
+++ b/util.c
@@ -134,6 +134,23 @@ bool safe_strtol(const char *str, int32_t *out) {
     return false;
 }
 
+bool safe_strtod(const char *str, double *out) {
+    assert(out != NULL);
+    errno = 0;
+    *out = 0;
+    char *endptr;
+    double d = strtod(str, &endptr);
+    if ((errno == ERANGE) || (str == endptr)) {
+        return false;
+    }
+
+    if (xisspace(*endptr) || (*endptr == '\0' && endptr != str)) {
+        *out = d;
+        return true;
+    }
+    return false;
+}
+
 void vperror(const char *fmt, ...) {
     int old_errno = errno;
     char buf[1024];