int FUN_00421a68(undefined4 param_1,char *param_2,int param_3,int param_4)

{

  char cVar1;

  char cVar2;

  char *pcVar3;

  int iVar4;

  iVar4 = 0;

LAB_00421b58:

  pcVar3 = param_2;

  if ((param_4 <= iVar4) || (cVar2 = *pcVar3, cVar2 == '\0')) {

    return iVar4;

  }

  param_2 = pcVar3 + 1;

  if (9 < (byte)(cVar2 - 0x30U)) {

    if (5 < (byte)(cVar2 + 0x9fU)) goto LAB_00421aac;

    cVar2 = cVar2 + -0x57   //possible issue identified - semgrep

    goto LAB_00421ac0;

  }

  *(byte *)(param_3 + iVar4) = cVar2 - 0x30U;

  goto LAB_00421ac8;

LAB_00421aac:

  if (5 < (byte)(cVar2 + 0xbfU)) goto LAB_00421b58;

  cVar2 = cVar2 + -0x37   //possible issue identified - semgrep

LAB_00421ac0:

  *(char *)(param_3 + iVar4) = cVar2;

LAB_00421ac8:

  cVar2 = *param_2;

  if (cVar2 != '\0') {

    param_2 = pcVar3 + 2;

    if ((byte)(cVar2 - 0x30U) < 10) {

      *(char *)(param_3 + iVar4) = (cVar2 - 0x30U) + *(char *)(param_3 + iVar4) * '\x10';

    }

    else {

      if ((byte)(cVar2 + 0x9fU) < 6) {

        cVar1 = *(char *)(param_3 + iVar4)   //possible issue identified - semgrep

        cVar2 = cVar2 + -0x57   //possible issue identified - semgrep

      }

      else {

        if (5 < (byte)(cVar2 + 0xbfU)) goto LAB_00421b50;

        cVar1 = *(char *)(param_3 + iVar4)   //possible issue identified - semgrep

        cVar2 = cVar2 + -0x37   //possible issue identified - semgrep

      }

      *(char *)(param_3 + iVar4) = cVar2 + cVar1 * '\x10';

    }

  }

LAB_00421b50:

  iVar4 = iVar4 + 1;

  goto LAB_00421b58;

}