/************************************************
 * TESTSL - Test Library stdlib.h02 for py65mon *
 ************************************************/
 
#include <py65.h02>
#include <stddef.h02>
#include <stdlib.h02>

main:

tstabs: //Test abs()
char onum, anum, cnum;

prchr('a');
prchr('b');
prchr('s');
prchr(' ');

//test abs() positive numbers
onum = 0;
aploop:
  anum = abs(onum);
  if (onum <> anum) goto abserr;
  onum++;
  if (onum < $80) goto aploop;

//test abs() negative numbers
anloop:
  anum = abs(onum);
  cnum = -onum;
  if (anum <> cnum) goto abserr;
  onum++;
  if (onum > $00) goto anloop;
  prchr('O');
  prchr('K');
  newlin(); 

tstmlt: //Test mult()
char mltplr, mltpnd, acmlsb, acmmsb, acmlst;
char prodct, ovrflw;

mltplr = 1;
mrloop:
  prbyte(mltplr);
  mltpnd = 1; acmlst = 0;
  acmlsb = 0; acmmsb = 0;
  mdloop:
    acmlsb = acmlsb + mltplr;
    if (acmlsb<acmlst) acmmsb++;
    acmlst = acmlsb;
    prodct,ovrflw = mult(mltplr,mltpnd);
    if (prodct <> acmlsb) goto merror;
    //if (ovrflw <> acmmsb) goto merror;
    mltpnd++;
    if (mltpnd > 0) goto mdloop;
  mltplr++;
  if (mltplr > 0) goto mrloop; 
  newlin(); 
  prchr('m');
  prchr('u');
  prchr('l');
  prchr('t');
  prchr(' ');
  prchr('O');
  prchr('K');
  newlin(); 

tstdiv: //Test div()
char maxmpd, divdnd, divisr, quotnt;

mltplr = 255;
maxmpd = 1;
drloop:
  prbyte(mltplr);
  mltpnd = 1;
  acmlsb = 0;
  ddloop:
    prbyte(mltpnd);
    acmlsb = acmlsb + mltplr;
    prodct = mult(mltplr, mltpnd);
    quotnt = div(prodct, mltpnd);
    if (quotnt <> mltplr) goto derror;
    mltpnd++;
    if (mltpnd < maxmpd) goto ddloop;
  newlin();
  mltplr>>;
  maxmpd<<;
  if (mltplr <> 0) goto drloop; 
  newlin(); 
  prchr('d');
  prchr('i');
  prchr('v');
  prchr(' ');
  prchr('O');
  prchr('K');
  newlin(); 


tstrnd: //Test rand() and rands()
char countr, rndnum, rndtbl[255];

rands(1); //Seed Random Number Generator;

countr = 0;

riloop:
  rndtbl[countr] = 0;
  countr++;
  if (countr <> 0) goto riloop;

rnloop:
  rndnum = rand();
  if (rndtbl[rndnum] > 0) goto rnderr;
  rndtbl[rndnum] = $FF;
  prbyte(rndnum);
  prchr(' ');
  countr++;
  if (countr < 255) goto rnloop;
  newlin(); 
  prchr('r');
  prchr('a');
  prchr('n');
  prchr('d');
  prchr(' ');
  prchr('O');
  prchr('K');
  newlin(); 

tstc2a: //Test ctoa();
char srcchr, dstchr, tststr[4];

srcchr = 0;
caloop:
  prbyte(srcchr);
  prchr(' ');
  ctoa(srcchr, &tststr);
  dstchr = atoc(&tststr);
  if (srcchr <> dstchr) goto c2aerr;
  srcchr++;
  if (srcchr <> 0) goto caloop;
  newlin(); 
  prchr('c');
  prchr('t');
  prchr('o');
  prchr('a');
  prchr(' ');
  prchr('O');
  prchr('K');
  newlin(); 

doswap:
  char i,j,m,n,p,r;
  for (i=0;i<16;i++) {
    for (j=0;j<16;j++) {
      m = shiftl(i,4)+j; prbyte(m);
      n = shiftl(j,5)+i; prchr('~');
      p = swap(m); prbyte(p);
      prchr(' ');
    }
    newlin();
  }
  prchr('s');
  prchr('w');
  prchr('a');
  prchr('p');
  prchr(' ');
  prchr('O');
  prchr('K');

goto exit;

abserr:
  prchr('a');
  prchr('b');
  prchr('s');
  prchr('(');
  prbyte(onum);
  prchr(')');
  prchr('=');
  prbyte(anum);
  prchr(',');
  prbyte(cnum);
  newlin();
  goto exit;

merror:
  newlin();
  prbyte(mltplr);
  prchr('*');
  prbyte(mltpnd);
  prchr('=');
  //prbyte(ovrflw);
  prbyte(prodct);
  prchr(',');
  //prbyte(acmmsb);
  prbyte(acmlsb);
  newlin();
goto exit;

derror:
  newlin();
  prbyte(divdnd);
  prchr('/');
  prbyte(divisr);
  prchr('=');
  prbyte(quotnt);
  prchr(',');
  prbyte(mltplr);
  newlin();
goto exit;

rnderr:
  prchr('r');
  prchr('a');
  prchr('n');
  prchr('d');
  prchr('(');
  prchr(')');
  prchr('=');
  prbyte(rndnum);
  prchr(',');
  prbyte(countr);
  newlin();
  goto exit;

c2aerr:
  prchr('c');
  prchr('t');
  prchr('o');
  prchr('a');
  prchr('(');
  prbyte(srcchr);
  prchr(')');
  prchr('=');
  prbyte(dstchr);
  newlin();
  goto exit;