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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <jni.h>
     18 
     19 namespace art {
     20 namespace Test988MethodTrace {
     21 
     22 extern "C" JNIEXPORT jint JNICALL Java_art_Test988_nativeFibonacci(JNIEnv* env, jclass, jint n) {
     23   if (n < 0) {
     24     env->ThrowNew(env->FindClass("java/lang/Error"), "bad argument");
     25     return -1;
     26   } else if (n == 0) {
     27     return 0;
     28   }
     29   jint x = 1;
     30   jint y = 1;
     31   for (jint i = 3; i <= n; i++) {
     32     jint z = x + y;
     33     x = y;
     34     y = z;
     35   }
     36   return y;
     37 }
     38 
     39 }  // namespace Test988MethodTrace
     40 }  // namespace art
     41 
     42