onebyte.c

Small Device C Compiler 面向Inter8051

/** test one byte mul/div/mod operations.

  attrL: volatile,
  attrR: volatile,
*/
#include <testfwk.h>

void
testMul(void)
{
  {attrL}            char  cL;
  {attrL}  unsigned  char ucL;
  {attrR}            char  cR;
  {attrR}  unsigned  char ucR;
  volatile           char   r8 , r8b;
  volatile unsigned  char  ur8, ur8b;
  volatile           short r16, r16b;

  cL = -127; cR =   -5; r16 =  cL * cR; r16b = cR *  cL; ASSERT(r16 ==  635); ASSERT(r16b ==  635);
  cL =  127; cR =   -5; r16 =  cL * cR; r16b = cR *  cL; ASSERT(r16 == -635); ASSERT(r16b == -635);
  cL = -127; cR =    5; r16 =  cL * cR; r16b = cR *  cL; ASSERT(r16 == -635); ASSERT(r16b == -635);
  cL =  127; cR =    5; r16 =  cL * cR; r16b = cR *  cL; ASSERT(r16 ==  635); ASSERT(r16b ==  635);

  cL = -128; cR =   -1; ur8  =  cL * cR; ur8b  = cR *  cL; ASSERT(ur8  ==  128); ASSERT(ur8b  ==  128);
  cL =  128; cR =   -1;  r8  =  cL * cR;  r8b  = cR *  cL; ASSERT( r8  == -128); ASSERT( r8b  == -128);
  cL = -128; cR =    1;  r8  =  cL * cR;  r8b  = cR *  cL; ASSERT( r8  == -128); ASSERT( r8b  == -128);
  cL =  128; cR =    1; ur8  =  cL * cR; ur8b  = cR *  cL; ASSERT(ur8  ==  128); ASSERT(ur8b  ==  128);

#ifndef SDCC_z80
  ucL = 128; cR =   -5; r16 = ucL * cR; r16b = cR * ucL; ASSERT(r16 == -640); ASSERT(r16b == -640);
  ucL = 128; cR =    5; r16 = ucL * cR; r16b = cR * ucL; ASSERT(r16 ==  640); ASSERT(r16b ==  640);
#endif

  ucL = 127;  cR =  -1;  r8 = ucL * cR;   r8b  = cR * ucL; ASSERT( r8 == -127); ASSERT( r8b  == -127);
  ucL = 128;  cR =   1; ur8 = ucL * cR;  ur8b  = cR * ucL; ASSERT(ur8 ==  128); ASSERT(ur8b  ==  128);
  ucL = 128; ucR =   5; r16 = ucL * ucR; r16b = ucR * ucL; ASSERT(r16 ==  640); ASSERT(r16b ==  640);
  ucL = 128; ucR =   1; ur8 = ucL * ucR; ur8b = ucR * ucL; ASSERT(ur8 ==  128); ASSERT(ur8b ==  128);
}

void
testDiv(void)
{
  {attrL}           char  cL;
  {attrL}  unsigned char ucL;
  {attrR}           char  cR;
  {attrR}  unsigned char ucR;
  volatile          char  r8;
  volatile unsigned char ur8;
  volatile         short r16;

   cL = -128;  cR =   -2; r8  = cL / cR; ASSERT(r8  ==  64);
   cL = -128;  cR =   -2; r16 = cL / cR; ASSERT(r16 ==  64);
 
  ucL =  255; ucR =    3; r8 = ucL / ucR; ASSERT(r8 ==  85);
  ucL =  255; ucR =  255; r8 = ucL / ucR; ASSERT(r8 ==   1);
  ucL =    3; ucR =  255; r8 = ucL / ucR; ASSERT(r8 ==   0);

   cL =  127;  cR =    3; r8 =  cL /  cR; ASSERT(r8 ==  42);
   cL = -127;  cR =    3; r8 =  cL /  cR; ASSERT(r8 == -42);
   cL =  127;  cR =   -3; r8 =  cL /  cR; ASSERT(r8 == -42);
   cL = -127;  cR =   -3; r8 =  cL /  cR; ASSERT(r8 ==  42);

  ucL =  127;  cR =    3; r8 = ucL /  cR; ASSERT(r8 ==  42);
  ucL =  255;  cR =    3; r8 = ucL /  cR; ASSERT(r8 ==  85);
#ifndef SDCC_z80
  ucL =  127;  cR =   -3; r8 = ucL /  cR; ASSERT(r8 == -42);
  ucL =  255;  cR =   -3; r8 = ucL /  cR; ASSERT(r8 == -85);
#endif
   
   cL =  127; ucR =    3; r8 =  cL / ucR; ASSERT(r8 ==  42);
   cL = -127; ucR =    3; r8 =  cL / ucR; ASSERT(r8 == -42);
   cL =  127; ucR =  128; r8 =  cL / ucR; ASSERT(r8 ==   0);
   cL = -127; ucR =  128; r8 =  cL / ucR; ASSERT(r8 ==   0);

   cL =  127;  cR =    1; r8  =  cL /  cR; ASSERT(r8  == 127);
   cL =  127;  cR =    1; r16 =  cL /  cR; ASSERT(r16 == 127);

  ucL = 251;   cR =    1; ur8 = ucL /  cR; ASSERT(ur8 == 251);
  ucL = 251;   cR =    1; r16 = ucL /  cR; ASSERT(r16 == 251);
  
#ifndef SDCC_z80
  ucL = 253;   cR =   -3; r8  = ucL /  cR; ASSERT(r8  == -84);
  ucL = 253;   cR =   -3; r16 = ucL /  cR; ASSERT(r16 == -84);
  
  ucL =  254;  cR =   -1; r16 = ucL /  cR; ASSERT(r16 == -254);
#endif
   cL = -128;  cR =   -1; r16 =  cL /  cR; ASSERT(r16 ==  128);
}

void
testMod(void)
{
  {attrL}           char  cL;
  {attrL}  unsigned char ucL;
  {attrR}           char  cR;
  {attrR}  unsigned char ucR;
  volatile          char  r8;
  volatile unsigned char ur8;
  volatile         short r16;

  ucL =  128;  cR =    5; r16 = ucL %  cR; ASSERT(r16 ==  3);
#ifndef SDCC_z80
  ucL =  128;  cR =   -5; r16 = ucL %  cR; ASSERT(r16 ==  3);
#endif
  ucL =  128; ucR =    5; r16 = ucL % ucR; ASSERT(r16 ==  3);

  ucL =  128; ucR =  255; ur8 = ucL % ucR; ASSERT(ur8 == 128);
  ucL =  128; ucR =  255; r16 = ucL % ucR; ASSERT(r16 == 128);

  ucL =  128;  cR =  127; r8  = ucL %  cR; ASSERT(r8  ==  1);
   
   cL =  127;  cR =    5; r16 =  cL %  cR; ASSERT(r16 ==  2);
   r16 = -1;
   cL =  127;  cR =   -5; r16 =  cL %  cR; ASSERT(r16 ==  2);
   r16 = -1;
   cL =  127; ucR =    5; r16 =  cL % ucR; ASSERT(r16 ==  2);
  
   cL = -128;  cR =    5; r16 =  cL %  cR; ASSERT(r16 == -3);
   r16 = 0;
   cL = -128;  cR =   -5; r16 =  cL %  cR; ASSERT(r16 == -3);
   r16 = 0;
   cL = -128; ucR =    5; r16 =  cL % ucR; ASSERT(r16 == -3);
}