eml_mtimes_helper.h File Reference

A MATLAB Coder helper for performing element-wise array operations. More...

#include "rtwtypes.h"
#include <stddef.h>
#include <stdlib.h>

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Functions
double	binary_expand_op (const double in1_data[], const int in1_size[2], const double in2_data[], const int *in2_size, const double in3_data[], const double in4_data[], const int *in4_size, const double in5_data[], const int *in5_size, const double in6_data[], const double in7_data[], const int *in7_size)
	Performs a fused set of element-wise operations for 2D interpolation.

Detailed Description

A MATLAB Coder helper for performing element-wise array operations.

Author

Francesco Abate, MSA (Originally generated by MATLAB Coder)

Version

24.2 (MATLAB Coder version)

Date

2024-12-03

This is an auto-generated helper file from MATLAB Coder. Its primary purpose is to provide functions that emulate MATLAB's "binary expansion" (also known as broadcasting) capabilities. This allows for element-wise operations on arrays of different but compatible dimensions without requiring explicit loops in the source code.

In this project, it is used as a low-level utility by the cdEvaluation function to execute the mathematical steps of a 2D bilinear interpolation. Developers should typically not call this function directly.

Definition in file eml_mtimes_helper.h.

Function Documentation

binary_expand_op()

double binary_expand_op	(	const double	in1_data[],
		const int	in1_size[2],
		const double	in2_data[],
		const int *	in2_size,
		const double	in3_data[],
		const double	in4_data[],
		const int *	in4_size,
		const double	in5_data[],
		const int *	in5_size,
		const double	in6_data[],
		const double	in7_data[],
		const int *	in7_size
	)

Performs a fused set of element-wise operations for 2D interpolation.

This function is a highly specific helper generated by MATLAB to efficiently compute a bilinear interpolation step. It combines multiple weighted sums of intermediate values using broadcasting logic.

Parameters

[in]	in1_data	Array containing the first weight factor (related to Mach distance).
[in]	in1_size	Dimensions of the in1_data array.
[in]	in2_data	Array containing the first intermediate interpolated value.
[in]	in2_size	Pointer to the size of the in2_data array.
[in]	in3_data	Array containing the second weight factor (related to Mach distance).
[in]	in4_data	Array containing the second intermediate interpolated value.
[in]	in4_size	Pointer to the size of the in4_data array.
[in]	in5_data	Array containing the third intermediate interpolated value.
[in]	in5_size	Pointer to the size of the in5_data array.
[in]	in6_data	Array containing the third weight factor (related to deployment distance).
[in]	in7_data	Array containing the fourth intermediate interpolated value.
[in]	in7_size	Pointer to the size of the in7_data array.

Returns

The final interpolated Coefficient of Drag (Cd), a dimensionless value.

Definition at line 31 of file eml_mtimes_helper.c.

{
  double b_in2_data;
  double in6;
  double out1;
  int i;
  int loop_ub;
  out1 = in3_data[0];
  in6 = in6_data[0];
  if (*in7_size == 1) {
    if (*in5_size == 1) {
      if (*in4_size == 1) {
        loop_ub = *in2_size;
      } else {
        loop_ub = *in4_size;
      }
    } else {
      loop_ub = *in5_size;
    }
  } else {
    loop_ub = *in7_size;
  }
  for (i = 0; i < loop_ub; i++) {
    b_in2_data =
        ((in2_data[0] * out1 + in4_data[0] * out1) + in5_data[0] * in6) +
        in7_data[0] * in6;
  }
  out1 = 0.0;
  loop_ub = in1_size[1];
  for (i = 0; i < loop_ub; i++) {
    out1 += in1_data[0] * b_in2_data;
  }
  return out1;
}

Referenced by cdEvaluation().

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