C 代码 应用正交规则来估计一维区间的积分， 使用 OpenMP 进行并行执行.rar

03 August 2020 11:48:53 AM QUAD_OPENMP: C version Use OpenMP for parallel execution. Estimate the integral of f(x) from A to B. f(x) = 50 / ( pi * ( 2500 * x * x + 1 ) ). A = 0.000000 B = 10.000000 N = 10000000 Exact = 0.4993633810764567 Estimate = 0.4993712889191264 Error = 7.907843e-06 Time = 0.293155 QUAD_OPENMP: Normal end of execution. 03 August 2020 11:48:54 AM 03 August 2020 11:48:54 AM QUAD_OPENMP: C version Use OpenMP for parallel execution. Estimate the integral of f(x) from A to B. f(x) = 50 / ( pi * ( 2500 * x * x + 1 ) ). A = 0.000000 B = 10.000000 N = 10000000 Exact = 0.4993633810764567 Estimate = 0.4993712889191463 Error = 7.907843e-06 Time = 0.139413 QUAD_OPENMP: Normal end of execution. 03 August 2020 11:48:54 AM 03 August 2020 11:48:54 AM QUAD_OPENMP: C version Use OpenMP for parallel execution. Estimate the integral of f(x) from A to B. f(x) = 50 / ( pi * ( 2500 * x * x + 1 ) ). A = 0.000000 B = 10.000000 N = 10000000 Exact = 0.4993633810764567 Estimate = 0.4993712889191516 Error = 7.907843e-06 Time = 0.069108 QUAD_OPENMP: Normal end of execution. 03 August 2020 11:48:54 AM 03 August 2020 11:48:54 AM QUAD_OPENMP: C version Use OpenMP for parallel execution. Estimate the integral of f(x) from A to B. f(x) = 50 / ( pi * ( 2500 * x * x + 1 ) ). A = 0.000000 B = 10.000000 N = 10000000 Exact = 0.4993633810764567 Estimate = 0.4993712889191149 Error = 7.907843e-06 Time = 0.038890 QUAD_OPENMP: Normal end of execution. 03 August 2020 11:48:54 AM