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diff --git a/tools/gen-trig-test.c b/tools/gen-trig-test.c
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+/* gen-trig-test.c
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <benjamin@chausse.xyz> wrote this file. As long as you retain this notice
+ * you can do whatever you want with this stuff. If we meet some day, and you
+ * think this stuff is worth it, you can buy me a beer in return.
+ * Benjamin Chausse
+ * ----------------------------------------------------------------------------
+ */
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* This code was used to generate floating numbers found in testData.h
+ * It's purpose is to generate a list of expected outputs for the sine
+ * and cosine function with a given number. It uses the math.h library
+ * which cannot be used for the assignment and which is therefore a great
+ * subject to test and compare with.
+ *
+ * The generated [][3]int list is organized as follows:
+ * { original_value, expected_sine, expected_cosine }
+ *
+ * Values chosen here test the following edge cases,
+ *   - Common trigonometric circle identities (0°,30°,45°,60°,90°, etc...)
+ *   - Negative values
+ *   - Values surpassing 2π
+ */
+
+int main(){
+
+  // list of number {{{
+  float lst[20] = {
+    0,         // 0°
+    M_PI/6,    // 30°
+    M_PI/4,    // 45°
+    M_PI/3,    // 60°
+    M_PI/2,    // 90°
+    2*M_PI/3,  // 120°
+    3*M_PI/4,  // 135°
+    5*M_PI/6,  // 150°
+    M_PI,      // 180°
+    7*M_PI/6,  // 210°
+    5*M_PI/4,  // 225°
+    4*M_PI/3,  // 240°
+    3*M_PI/2,  // 270°
+    5*M_PI/3,  // 300°
+    7*M_PI/4,  // 315°
+    11*M_PI/6, // 330°
+    5*M_PI/2,  // 450° (over 2π -> sin=1)
+    3*M_PI,    // 540° (over 2π -> cos=1)
+    -5*M_PI/2, // -90 negative value -> sin=-1°
+    -3*M_PI,   // -180 negative value -> cos=-1°
+
+  };
+  // }}}
+
+  printf("int piValues[][] = {\n");
+  int max = (sizeof(lst)/sizeof(lst[0]))-1;
+  printf("%d",max);
+  for (int i=0; i<max; i++) {
+    printf("  {%f, %f, %f},\n",
+        lst[i],
+        sin(lst[i]),
+        cos(lst[i]));
+  };
+  printf("  {%f, %f, %f}\n}",
+      lst[max],
+      sin(lst[max]),
+      cos(lst[max]));
+
+  return 0
+}