checkpoint

1 files changed, 59 insertions, 0 deletions

diff --git a/src/haversine/libs/pcg/pcg-global-64.c b/src/haversine/libs/pcg/pcg-global-64.c
new file mode 100644
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+++ b/src/haversine/libs/pcg/pcg-global-64.c
@@ -0,0 +1,59 @@
+/*
+ * PCG Random Number Generation for C.
+ *
+ * Copyright 2014 Melissa O'Neill <oneill@pcg-random.org>
+ *
+ * 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.
+ *
+ * For additional information about the PCG random number generation scheme,
+ * including its license and other licensing options, visit
+ *
+ *     http://www.pcg-random.org
+ */
+
+/*
+ * This code is derived from the canonical C++ PCG implementation, which
+ * has many additional features and is preferable if you can use C++ in
+ * your project.
+ *
+ * The contents of this file were mechanically derived from pcg_variants.h
+ * (every inline function defined there gets an exern declaration here).
+ */
+
+#include "pcg_variants.h"
+
+#if PCG_HAS_128BIT_OPS
+
+static pcg64_random_t pcg64_global = PCG64_INITIALIZER;
+
+uint64_t pcg64_random()
+{
+    return pcg64_random_r(&pcg64_global);
+}
+
+uint64_t pcg64_boundedrand(uint64_t bound)
+{
+    return pcg64_boundedrand_r(&pcg64_global, bound);
+}
+
+void pcg64_srandom(pcg128_t seed, pcg128_t seq)
+{
+    pcg64_srandom_r(&pcg64_global, seed, seq);
+}
+
+void pcg64_advance(pcg128_t delta)
+{
+    pcg64_advance_r(&pcg64_global, delta);
+}
+
+#endif