| is_complex0 | Function (ROM Call 0x2D3)

AMS 1.01 or higher | estack.h

short is_complex0 (CESI ptr);

Checks whether an expression is reducible to zero.

is_complex0 returns TRUE if the expression pointed to by ptr is a zero (signed, unsigned, or even complex), otherwise it returns FALSE.
Note: The information about this routine in releases of TIGCCLIB before 2.3 was wrong.

Uses: next_expression_index, is0
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, is_equivalent_to