如何只用位操作在ABAP里实现a+b

本篇文章为大家展示了如何只用位操作在ABAP里实现a+b，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

实现代码：

REPORT zint.PARAMETERS: a TYPE int4 OBLIGATORY DEFAULT 100,            b TYPE int4 OBLIGATORY DEFAULT 100. DATA: threshold TYPE int4.FORM add USING a TYPE int4 b TYPE int4 CHANGING cv_result TYPE int4.  DATA: n TYPE int4 VALUE 0,        c TYPE int4 VALUE 0. DATA: i TYPE int4 VALUE 1. DATA: boolean_a TYPE abap_bool,        boolean_b TYPE abap_bool,        _a        TYPE int4,        _b        TYPE int4,        aa TYPE int4,        bb TYPE int4.  DATA(wrapper_one) = zcl_integer=>value_of( 1 ).  DATA(wrapper_c) = zcl_integer=>value_of( c ).  aa = a.  bb = b. WHILE i < threshold.    DATA(wrapper_a) = zcl_integer=>value_of( aa ).    DATA(wrapper_b) = zcl_integer=>value_of( bb ).    boolean_a = boolc( wrapper_a->and( wrapper_one )->get_raw_value( ) EQ 1 ).    boolean_b = boolc( wrapper_b->and( wrapper_one )->get_raw_value( ) EQ 1 ).    _a = COND int4( WHEN boolean_a EQ abap_true THEN 1 ELSE 0 ).    _b = COND int4( WHEN boolean_b EQ abap_true THEN 1 ELSE 0 ).    wrapper_a = zcl_integer=>value_of( _a ).    wrapper_b = zcl_integer=>value_of( _b ).    wrapper_c = zcl_integer=>value_of( c ).    DATA(_n_wrapper) = wrapper_a->xor( wrapper_b )->xor( wrapper_c ).    DATA(b_or_c) = wrapper_b->or( wrapper_c ).    DATA(b_and_c) = wrapper_b->and( wrapper_c ).    DATA(_c_wrapper) = wrapper_a->and( b_or_c )->or( b_and_c ).    c = _c_wrapper->get_raw_value( ).    DATA(_n_i0_wrapper) = zcl_integer=>value_of( COND int4( WHEN _n_wrapper->get_raw_value( ) > 0 THEN i ELSE 0 ) ).    DATA(wrapper_n) = zcl_integer=>value_of( n ).    n = wrapper_n->or( _n_i0_wrapper )->get_raw_value( ).    wrapper_a = zcl_integer=>value_of( aa ).    aa = wrapper_a->shift_right( )->get_raw_value( ).    wrapper_b = zcl_integer=>value_of( bb ).    bb = wrapper_b->shift_right( )->get_raw_value( ).    cv_result = n.    DATA(wrapper_i) = zcl_integer=>value_of( i ).    wrapper_i->shift_left( ).    i = wrapper_i->get_raw_value( ). ENDWHILE.ENDFORM.START-OF-SELECTION.  DATA: i TYPE int4.  threshold = ipow( base = 2 exp = 30 ).  PERFORM add USING a b CHANGING i.  WRITE: / i.

上述内容就是如何只用位操作在ABAP里实现a+b，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注行业资讯频道。