From 180868ae1ca3177af88608e80d9ff0139d364a1b Mon Sep 17 00:00:00 2001
From: Heng Li <lh3@live.co.uk>
Date: Mon, 25 Jul 2011 23:20:13 -0400
Subject: [PATCH] added kstring_sprintf.cc

---
 kstring.c               |  4 +--
 test/Makefile           |  7 +++--
 test/kstring_sprintf.cc | 59 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 66 insertions(+), 4 deletions(-)
 create mode 100644 test/kstring_sprintf.cc

diff --git a/kstring.c b/kstring.c
index 567800f..29f6985 100644
--- a/kstring.c
+++ b/kstring.c
@@ -99,13 +99,13 @@ typedef unsigned char ubyte_t;
 static int *ksBM_prep(const ubyte_t *pat, int m)
 {
 	int i, *suff, *prep, *bmGs, *bmBc;
-	prep = calloc(m + 256, sizeof(int));
+	prep = (int*)calloc(m + 256, sizeof(int));
 	bmGs = prep; bmBc = prep + m;
 	{ // preBmBc()
 		for (i = 0; i < 256; ++i) bmBc[i] = m;
 		for (i = 0; i < m - 1; ++i) bmBc[pat[i]] = m - i - 1;
 	}
-	suff = calloc(m, sizeof(int));
+	suff = (int*)calloc(m, sizeof(int));
 	{ // suffixes()
 		int f = 0, g;
 		suff[m - 1] = m;
diff --git a/test/Makefile b/test/Makefile
index 7a67971..c48236f 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -3,12 +3,13 @@ CXX=g++
 CFLAGS=-g -Wall -O2 -I..
 CXXFLAGS=$(CFLAGS)
 PROGS=kbtree_test khash_keith khash_keith2 khash_test klist_test kseq_test kseq_bench \
-		kseq_bench2 ksort_test ksort_test-stl kvec_test kmin_test kstring_bench kstring_bench2
+		kseq_bench2 ksort_test ksort_test-stl kvec_test kmin_test kstring_bench kstring_bench2 \
+		kstring_sprintf
 
 all:$(PROGS)
 
 clean:
-		rm -fr $(PROGS) *.dSYM
+		rm -fr $(PROGS) *.dSYM a.out
 
 kbtree_test:kbtree_test.c ../kbtree.h
 		$(CC) $(CFLAGS) -o $@ kbtree_test.c
@@ -52,3 +53,5 @@ kstring_bench:kstring_bench.c ../kstring.h ../kstring.c
 kstring_bench2:kstring_bench2.c ../kstring.h ../kstring.c
 		$(CC) $(CFLAGS) -o $@ kstring_bench2.c ../kstring.c
 
+kstring_sprintf:kstring_sprintf.cc ../kstring.h ../kstring.c
+		$(CXX) $(CXXFLAGS) -o $@ kstring_sprintf.cc ../kstring.c
diff --git a/test/kstring_sprintf.cc b/test/kstring_sprintf.cc
new file mode 100644
index 0000000..64bb14c
--- /dev/null
+++ b/test/kstring_sprintf.cc
@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+#include <iostream>
+#include <sstream>
+#include "kstring.h"
+
+using namespace std;
+
+int main(int argc, char *argv)
+{
+	int i, N = 1<<21;
+	kstring_t str;
+	clock_t beg;
+	char buf[256];
+	ostringstream ostr;
+
+	str.l = str.m = 0; str.s = 0;
+
+	beg = clock();
+	for (i = 0; i < N; ++i) {
+		str.l = 0;
+		ksprintf_fast(&str, "%d\n", i);
+	}
+	printf("int, ksprintf_fast(): %.3f\n", (double)(clock() - beg) / CLOCKS_PER_SEC);
+
+	beg = clock();
+	for (i = 0; i < N; ++i)
+		sprintf(buf, "%d\n", i);
+	printf("int, sprintf(): %.3f\n", (double)(clock() - beg) / CLOCKS_PER_SEC);
+
+	beg = clock();
+	for (i = 0; i < N; ++i) {
+		str.l = 0;
+		kputw(i, &str); kputc('\n', &str);
+	}
+	printf("int, kputw/kputc(): %.3f\n", (double)(clock() - beg) / CLOCKS_PER_SEC);
+
+	beg = clock();
+	for (i = 0; i < N; ++i) {
+		ostr.seekp(0);
+		ostr<<i<<endl;
+	}
+	printf("int, ostream: %.3f\n", (double)(clock() - beg) / CLOCKS_PER_SEC);
+
+	beg = clock();
+	for (i = 0; i < N; ++i) {
+		str.l = 0;
+		ksprintf_fast(&str, "%g\n", (double)i);
+	}
+	printf("double, ksprintf_fast(): %.3f\n", (double)(clock() - beg) / CLOCKS_PER_SEC);
+
+	beg = clock();
+	for (i = 0; i < N; ++i)
+		sprintf(buf, "%g\n", (double)i);
+	printf("double, sprintf(): %.3f\n", (double)(clock() - beg) / CLOCKS_PER_SEC);
+
+	return 0;
+}
-- 
2.47.3