Lesson 35 - Get Compute Auth Token Working

Plugins/GameLiftPlugin/Source/AWSSDK/Include/aws/common/math.gcc_builtin.inl

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+#ifndef AWS_COMMON_MATH_GCC_BUILTIN_INL
+#define AWS_COMMON_MATH_GCC_BUILTIN_INL
+
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+
+/*
+ * This header is already included, but include it again to make editor
+ * highlighting happier.
+ */
+#include <aws/common/common.h>
+#include <aws/common/math.h>
+
+/* clang-format off */
+
+AWS_EXTERN_C_BEGIN
+
+/**
+ * Search from the MSB to LSB, looking for a 1
+ */
+AWS_STATIC_IMPL size_t aws_clz_u32(uint32_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_clz(n);
+}
+
+AWS_STATIC_IMPL size_t aws_clz_i32(int32_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_clz(n);
+}
+
+AWS_STATIC_IMPL size_t aws_clz_u64(uint64_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_clzll(n);
+}
+
+AWS_STATIC_IMPL size_t aws_clz_i64(int64_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_clzll(n);
+}
+
+AWS_STATIC_IMPL size_t aws_clz_size(size_t n) {
+#if SIZE_BITS == 64
+    return aws_clz_u64(n);
+#else
+    return aws_clz_u32(n);
+#endif
+}
+
+/**
+ * Search from the LSB to MSB, looking for a 1
+ */
+AWS_STATIC_IMPL size_t aws_ctz_u32(uint32_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_ctzl(n);
+}
+
+AWS_STATIC_IMPL size_t aws_ctz_i32(int32_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_ctz(n);
+}
+
+AWS_STATIC_IMPL size_t aws_ctz_u64(uint64_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_ctzll(n);
+}
+
+AWS_STATIC_IMPL size_t aws_ctz_i64(int64_t n) {
+    if (n == 0) {
+        return sizeof(n) * 8;
+    }
+    return __builtin_ctzll(n);
+}
+
+AWS_STATIC_IMPL size_t aws_ctz_size(size_t n) {
+#if SIZE_BITS == 64
+    return aws_ctz_u64(n);
+#else
+    return aws_ctz_u32(n);
+#endif
+}
+
+AWS_EXTERN_C_END
+
+/* clang-format on */
+
+#endif /* AWS_COMMON_MATH_GCC_BUILTIN_INL */