Abs

Author: rajithv

ext/symengine/symengine.c

@@ -113,6 +113,10 @@ void Init_symengine() {
     c_dirichlet_eta = rb_define_class_under(m_symengine, "Dirichlet_eta", c_function);
     c_zeta = rb_define_class_under(m_symengine, "Zeta", c_function);
     c_gamma = rb_define_class_under(m_symengine, "Gamma", c_function);
+    c_one_arg_function = rb_define_class_under(m_symengine, "OneArgFunction", c_function);
+
+    //Abs Class
+    c_abs = rb_define_class_under(m_symengine, "Abs", c_function);
 
     //TrigFunction SubClasses
     c_sin = rb_define_class_under(m_symengine, "Sin", c_trig_function);

ext/symengine/symengine.h

@@ -25,6 +25,8 @@ VALUE c_lambertw;
 VALUE c_dirichlet_eta;
 VALUE c_zeta;
 VALUE c_gamma;
+VALUE c_one_arg_function;
+VALUE c_abs;
 VALUE c_sin;
 VALUE c_cos;
 VALUE c_tan;

ext/symengine/symengine_utils.c

@@ -101,6 +101,8 @@ VALUE Klass_of_Basic(const basic_struct *basic_ptr) {
             return c_mul;
         case SYMENGINE_POW:
             return c_pow;
+        case SYMENGINE_ABS:
+            return c_abs;
         case SYMENGINE_SIN:
             return c_sin;
         case SYMENGINE_COS: