use fabs and explicitly mark variables as floating point

geometry/vectors_3d.c

@@ -158,8 +158,10 @@ vec_3d unit_vec(const vec_3d *a)
     vec_3d n = {0};
 
     float norm = vector_norm(a);
-    if (fabsf(norm) < EPSILON)  // detect possible divide by 0
+    if (fabsf(norm) < EPSILON)
+    {  // detect possible divide by 0
         return n;
+    }
 
     if (norm != 1.F)  // perform division only if needed
     {
@@ -206,21 +208,21 @@ static void test()
 
     d = vector_norm(&a);
     // printf("|a| = %.4g\n", d);
-    assert(fabs(d - 3.742) < 0.01);
+    assert(fabsf(d - 3.742f) < 0.01);
     d = vector_norm(&b);
     // printf("|b| = %.4g\n", d);
-    assert(fabs(d - 1.732) < 0.01);
+    assert(fabsf(d - 1.732f) < 0.01);
 
     d = dot_prod(&a, &b);
     // printf("Dot product: %f\n", d);
-    assert(fabs(d - 6.f) < 0.01);
+    assert(fabsf(d - 6.f) < 0.01);
 
     vec_3d c = vector_prod(&a, &b);
     // printf("Vector product ");
     // printf("%s", print_vector(&c, "c"));
-    assert(fabs(c.x - (-1)) < 0.01);
-    assert(fabs(c.y - (2)) < 0.01);
-    assert(fabs(c.z - (-1)) < 0.01);
+    assert(fabsf(c.x - (-1.f)) < 0.01);
+    assert(fabsf(c.y - (2.f)) < 0.01);
+    assert(fabsf(c.z - (-1.f)) < 0.01);
 }
 
 /**