Differences

This shows you the differences between two versions of the page.

--- c:index [2009/08/13 09:50] – created tkbletsc
+++ c:index [2011/03/03 11:28] (current) – tkbletsc
@@ Line 1: / Line 1: @@
+====== C/C++ code snippets ======
   * [[getopt]]
   * [[key-value pairs]]
   * [[timing]]
+  * [[memmem]] - find substrings of raw memory (as opposed to null terminated strings)
+  * [[Getting mixed C and assembler output]]
 <code=c>
@@ Line 7: / Line 12: @@
 #include <stdio.h>
 #include <stdlib.h>
+#ifdef DEBUGMSG
+	#define DEBUG printf
+#else
+	#define DEBUG(...)
+#endif
 #define die(...) { fprintf(stderr, __VA_ARGS__); exit(1); }
 #define pdie(s) { perror(s); exit(1); }
+char parse_size(int64_t* v, char* s) {
+	char suffix;
+	if (sscanf(s,"%lld%c",v,&suffix)==2) {
+		if      (suffix=='k' || suffix=='K') (*v)*=1024;
+		else if (suffix=='m' || suffix=='M') (*v)*=1024*1024;
+		else if (suffix=='g' || suffix=='G') (*v)*=1024*1024*1024;
+		else if (suffix=='t' || suffix=='T') (*v)*=(int64_t)(1024*1024)*(int64_t)(1024*1024);
+		else return 0;
+		return 1;
+	} else if (sscanf(s,"%lld",v)==1) {
+		return 1;
+	}
+	return 0;
+}
+char* tok;
+for (tok = strtok(value,","); tok ; tok = strtok(NULL,",")) {
+    ...
+}
 </code>