addsub.c

来自「sdcc是为51等小型嵌入式cpu设计的c语言编译器支持数种不同类型的cpu」· C语言 代码 · 共 74 行

/** Add, sub tests.

    type: signed char, int, long
    storage: static, 
    attr: volatile
*/
#include <testfwk.h>

void 
testAdd(void)
{
  {storage} {attr} {type} left, right, result;

  left = 5;
  right = 26;

  result = left+right;
  ASSERT(result == 31);
  
  left = 39;
  right = -120;
  
  result = left+right;
  ASSERT(result == (39-120));

  left = -39;
  right = 80;
  
  result = left+right;
  ASSERT(result == (-39+80));

  left = -39;
  right = -70;
  
  result = left+right;
  ASSERT(result == (-39-70));

  result += 0xab00;
  ASSERT(result == ({type})(0xab00-39-70));
}

void 
testSub(void)
{
  {storage} {attr} {type} left, right, result;

  left = 5;
  right = 26;

  result = left-right;
  ASSERT(result == (5-26));
  
  left = 39;
  right = -76;
  
  result = left-right;
  ASSERT(result == (39+76));

  left = -12;
  right = 56;
  
  result = left-right;
  ASSERT(result == (-12-56));
  
  left = -39;
  right = -20;
  
  result = left-right;
  ASSERT(result == (-39+20));

  result = left-(signed)0x1200;
  ASSERT(result == ({type})(-39-(signed)0x1200));
}