From 625692972e441381041128bc76c198b0e9c13b52 Mon Sep 17 00:00:00 2001
From: dormando <dormando@rydia.net>
Date: Fri, 27 Jan 2017 14:15:41 -0800
Subject: "lru tune" command for setting LRU parameters

---
 util.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'util.c')

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];
-- 
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