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path: root/support/dktools/dk4mai8hdu.c
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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4mai8hdu.ctr
*/

/**	@file dk4mai8hdu.c The dk4mai8hdu module.
*/


#line 84 "dk4mai8hdu.ctr"

#include "dk4conf.h"

#if	DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif

#include "dk4mai8hdu.h"
#include "dk4numco.h"
#include "dk4str8.h"





#line 101 "dk4mai8hdu.ctr"



int
dk4ma_input_c8_hex_dk4_um_t(
  dk4_um_t	 *rp,
  const char	 *src,
  const char	**endptr,
  int		  atg,
  dk4_er_t	 *erp
)
{
#if VERSION_BEFORE_20141007
  dk4_er_t	  er;
#endif
  dk4_um_t	  result=	(dk4_um_t)0UL;
  dk4_um_t	  op;
  const char	 *ep	=	NULL;
  int		  found	=	0;
  int		  back	=	0;
  int		  cc	=	1;
  

#line 123 "dk4mai8hdu.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != rp);
  assert(NULL != src);
#endif
  if ((NULL != rp) && (NULL != src)) {
    if ('0' == src[0]) {
      if (('x' == src[1]) || ('X' == src[1])) { src++; src++; }
    }
#if VERSION_BEFORE_20141007
    dk4error_init(&er);
#endif
    do {
      

#line 136 "dk4mai8hdu.ctr"
      op = (dk4_um_t)0UL;
      switch (*src) {
        case '0': { op = (dk4_um_t)0UL; } break;
        case '1': { op = (dk4_um_t)1UL; } break;
        case '2': { op = (dk4_um_t)2UL; } break;
        case '3': { op = (dk4_um_t)3UL; } break;
        case '4': { op = (dk4_um_t)4UL; } break;
        case '5': { op = (dk4_um_t)5UL; } break;
        case '6': { op = (dk4_um_t)6UL; } break;
        case '7': { op = (dk4_um_t)7UL; } break;
        case '8': { op = (dk4_um_t)8UL; } break;
        case '9': { op = (dk4_um_t)9UL; } break;
	case 'a': case 'A': { op = (dk4_um_t)10UL; } break;
	case 'b': case 'B': { op = (dk4_um_t)11UL; } break;
	case 'c': case 'C': { op = (dk4_um_t)12UL; } break;
	case 'd': case 'D': { op = (dk4_um_t)13UL; } break;
	case 'e': case 'E': { op = (dk4_um_t)14UL; } break;
	case 'f': case 'F': { op = (dk4_um_t)15UL; } break;
	case '\0': {			

#line 155 "dk4mai8hdu.ctr"
	  cc = 0;
	  if (0 != found) {		

#line 157 "dk4mai8hdu.ctr"
	    back = 1;
	    *rp = result;
	  } else {			

#line 160 "dk4mai8hdu.ctr"
	    ep = src;
	    dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
	  }
	} break;
	default: {
	  cc = 0;
	  ep = src;
	  if (0 != found) {
	    switch (atg) {
	      case 2: {
	        back = 1;
		*rp = result;
	      } break;
	      case 1: {
	        if (NULL == dk4str8_start(src, NULL)) {
		  back = 1;
		  *rp = result;
		} else {
		  dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
		}
	      } break;
	      default: {
	        dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
	      } break;
	    }
	  } else {
	    dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
	  }
	} break;
      }
      if (0 != cc) {
        found = 1;
#if VERSION_BEFORE_20141007
        result = dk4ma_um_add(
	  dk4ma_um_mul(result, (dk4_um_t)16UL, &er),
	  op, &er
	);
	if (DK4_E_NONE != er.ec) {
	  cc = 0;
	  dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	  ep = src;
	}
#else
	if ((DK4_UM_MAX / (dk4_um_t)16UL) >= result) {
	  result *= (dk4_um_t)16UL;
	  if ((DK4_UM_MAX - op) >= result) {
	    result += op;
	  } else {
	    cc = 0;
	    ep = src;
	    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	  }
	} else {
	  cc = 0;
	  ep = src;
	  dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	}
#endif
      }
      if (0 != cc) {
        src++;
      }
    } while (0 != cc);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
    if (NULL != src) { ep = src; }
  }
  if (NULL != endptr) { *endptr = ep; }
  

#line 229 "dk4mai8hdu.ctr"
  return back;
}