nginx 0.8.25 *) Change: now no message is written in an error log if a variable is not found by $r->variable() method. *) Feature: the ngx_http_degradation_module. *) Feature: regular expression named captures. *) Feature: now URI part is not required a "proxy_pass" directive if variables are used. *) Feature: now the "msie_padding" directive works for Chrome too. *) Bugfix: a segmentation fault occurred in a worker process on low memory condition; the bug had appeared in 0.8.18. *) Bugfix: nginx sent gzipped responses to clients those do not support gzip, if "gzip_static on" and "gzip_vary off"; the bug had appeared in 0.8.16.

--- a/src/core/ngx_core.h
+++ b/src/core/ngx_core.h
@@ -83,7 +83,9 @@ typedef void (*ngx_connection_handler_pt
 #define CRLF   "\x0d\x0a"
 
 
-#define ngx_abs(value)   (((value) >= 0) ? (value) : - (value))
+#define ngx_abs(value)       (((value) >= 0) ? (value) : - (value))
+#define ngx_max(val1, val2)  ((val1 < val2) ? (val2) : (val1))
+#define ngx_min(val1, val2)  ((val1 > val2) ? (val2) : (val1))
 
 void ngx_cpuinfo(void);