is_symmetric Function (ROM Call 0x2DC)
AMS 1.01 or higher estack.h

short is_symmetric (CESI expr_ptr, CESI var_ptr);

Checks for symmetry.

is_symmetric returns TRUE if the expression pointed to by expr_ptr is such that it remains the same when the variable pointed to by var_ptr changes its sign, otherwise it returns FALSE.

Uses: top_estack, push_negate, push_substitute_simplify, is0, subtract_from_top
Used by: did_push_anti_deriv, push_1st_derivative, push_csolve, push_czeros, push_def_int, push_desolve, push_lim, push_max, push_min, push_nsolve, push_solve, push_zeros, push_equals, push_greater_than, push_greater_than_or_equals, push_less_than, push_less_than_or_equals, push_not_equals, get_ub