Disabled external gits

cs440-acg/ext/tbb/examples/pipeline/square/gen_input.cpp

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+/*
+    Copyright (c) 2005-2020 Intel Corporation
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdexcept>
+
+#if _WIN32
+#include <io.h>
+#ifndef F_OK
+#define F_OK 0
+#endif
+#define access _access
+#else
+#include <unistd.h>
+#endif
+
+const long INPUT_SIZE = 1000000;
+
+//! Generates sample input for square.cpp
+void gen_input( const char *fname ) {
+    long num = INPUT_SIZE;
+    FILE *fptr = fopen(fname, "w");
+    if(!fptr) {
+        throw std::runtime_error("Could not open file for generating input");
+    }
+
+    int a=0;
+    int b=1;
+    for( long j=0; j<num; ++j ) {
+        fprintf(fptr, "%u\n",a);
+        b+=a;
+        a=(b-a)%10000;
+        if (a<0) a=-a;
+    }
+
+    if(fptr) {
+        fclose(fptr);
+    }
+}
+
+void generate_if_needed( const char *fname ) {
+    if ( access(fname, F_OK) != 0 )
+        gen_input(fname);
+}