Import LinuxCNC source tree

tests/rtapi_printf.0/.gitignore

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+test_rtapi_vsnprintf

tests/rtapi_printf.0/checkresult

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+#!/bin/sh
+! grep -q '\*fail\*' "$1"

tests/rtapi_printf.0/test.sh

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+#!/bin/bash -xe
+
+g++ -DULAPI -I"${HEADERS}" -std=c++0x \
+    -DSIM -rdynamic -L"${LIBDIR}" \
+    -o test_rtapi_vsnprintf test_rtapi_vsnprintf.c
+./test_rtapi_vsnprintf

tests/rtapi_printf.0/test_rtapi_vsnprintf.c

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+/*
+ * Copyright (C) 2013 Jeff Epler <jepler@unpythonic.net>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+#include <rtapi.h>
+#include <rtapi_vsnprintf.h>
+#include <stdio.h>
+#include <string.h>
+
+int rtapi_snprintf(char *buf, unsigned long size, const char *fmt, ...)
+{
+    int retval;
+    va_list ap;
+    va_start(ap, fmt);
+    retval = rtapi_vsnprintf(buf, size, fmt, ap);
+    va_end(ap);
+    return retval;
+}
+
+double vectors[] = {
+    0.0, -0.0, 3.14, -3.14,
+    100, 1e6, 1e300,
+    1e-10, 1e-100, 1e-280, 1e-300,
+    -__builtin_inf(), __builtin_inf(), __builtin_nan(""), 
+};
+
+int nvectors = sizeof(vectors)/sizeof(vectors[0]);
+
+#include <sys/time.h>
+#include <sys/resource.h>
+double unow()
+{
+    struct rusage ru;
+    getrusage(RUSAGE_SELF, &ru);
+    return ru.ru_utime.tv_sec + ru.ru_utime.tv_usec*1e-6;
+}
+
+#define N (1000000)
+
+int main(void)
+{
+    char buf1[1024], buf2[1024];
+    int i, fail=0;
+    for(i=0; i<nvectors; i++)
+    {
+	int j;
+	double t0, t1;
+	t0 = unow();
+	for(j=0; j<N; j++)
+	{
+	    rtapi_snprintf(buf1, sizeof(buf1), "%f", vectors[i]);
+	}
+	t1 = unow();
+	snprintf(buf2, sizeof(buf2), "%A", vectors[i]);
+	printf("rtapi=%-30s libc=%-30s", buf1, buf2);
+	if(strcasecmp(buf1, buf2)) {
+	    fail++;
+	    printf(" ****fail****");
+	}
+	printf(" %.1fns/it\n", (t1-t0)*1e9/N);
+    }
+    return fail ? 1 : 0;
+}