X-Git-Url: https://git.auder.net/?p=valse.git;a=blobdiff_plain;f=test%2Ftest_utils.c;fp=test%2Ftest_utils.c;h=96972eebffc90ddddfaf3509fc91daadf23194c1;hp=0000000000000000000000000000000000000000;hb=f87ff0f5116c0c1c59c5608e46563ff0f79e5d43;hpb=53fa233d8fbeaf4d51a4874ba69d8472d01d04ba

diff --git a/test/test_utils.c b/test/test_utils.c
new file mode 100644
index 0000000..96972ee
--- /dev/null
+++ b/test/test_utils.c
@@ -0,0 +1,103 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include "utils.h"
+
+// Check if array == refArray
+void compareArray(const char* ID, const void* array, const void* refArray, int size,
+	int isinteger)
+{
+	Real EPS = 1e-5; //precision
+	printf("Checking %s\n",ID);
+	Real maxError = 0.0;
+	for (int i=0; i<size; i++)
+	{
+		Real error = isinteger
+			? fabs(((int*)array)[i] - ((int*)refArray)[i])
+			: fabs(((Real*)array)[i] - ((Real*)refArray)[i]);
+		if (error >= maxError)
+			maxError = error;
+	}
+	if (maxError >= EPS)
+		printf("    Inaccuracy: max(abs(error)) = %g >= %g\n",maxError,EPS);
+	else
+		printf("    OK\n");
+}
+
+void compareArray_real(const char* ID, const void* array, const void* refArray, int size)
+{
+	return compareArray(ID, array, refArray, size, 0);
+}
+
+void compareArray_int(const char* ID, const void* array, const void* refArray, int size)
+{
+	return compareArray(ID, array, refArray, size, 1);
+}
+
+// Read array by columns (as in MATLAB) and return by-rows encoding
+void* readArray(const char* fileName, int isinteger)
+{
+	// need to prepend 'data/' (not really nice code...)
+	char* fullFileName = (char*)calloc(5+strlen(fileName)+1, sizeof(char));
+	strcat(fullFileName, "data/");
+	strcat(fullFileName, fileName);
+
+	// first pass to know how many elements to allocate
+	char* command = (char*)calloc(12+strlen(fullFileName)+8+1, sizeof(char));
+	strcat(command, "wc -l ");
+	strcat(command, fullFileName);
+	FILE *arraySize = popen(command, "r");
+	free(command);
+	char* bufferNum = (char*)calloc(64, sizeof(char));
+	fgets(bufferNum, sizeof(bufferNum), arraySize);
+	int n = atoi(bufferNum);
+	pclose(arraySize);
+
+	// open file for reading
+	FILE* arrayFile = fopen(fullFileName, "r");
+	free(fullFileName);
+
+	// read all values, and convert them to by-rows matrices format
+	size_t elementSize = isinteger ? sizeof(int) : sizeof(Real);
+	void* array = malloc(n*elementSize);
+	for (int i=0; i<n; i++)
+	{
+		fgets(bufferNum, 64, arrayFile);
+		// transform buffer content into Real or int, and store it at appropriate location
+		if (isinteger)
+			((int*)array)[i] = atoi(bufferNum);
+		else
+			((Real*)array)[i] = atof(bufferNum);
+	}
+	fclose(arrayFile);
+	free(bufferNum);
+
+	return array;
+}
+
+int* readArray_int(const char* fileName)
+{
+	return (int*)readArray(fileName, 1);
+}
+
+Real* readArray_real(const char* fileName)
+{
+	return (Real*)readArray(fileName, 0);
+}
+
+int read_int(const char* fileName)
+{
+	int* array = readArray_int(fileName);
+	int res = array[0];
+	free(array);
+	return res;
+}
+
+Real read_real(const char* fileName)
+{
+	Real* array = readArray_real(fileName);
+	Real res = array[0];
+	free(array);
+	return res;
+}