kc3-lang/libtommath/demo/shared.c

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• Hash : 08d281c4
  Author :
  Date : 2019-12-05T00:48:25
  

  introduce MP_MAX_DIGIT_COUNT to prevent overflow

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• demo/shared.c

• #include "shared.h"
  
  void ndraw(const mp_int *a, const char *name)
  {
     char *buf;
     size_t size = 0;
     mp_err err;
  
     if ((err = mp_radix_size_overestimate(a, 10, &size)) != MP_OKAY) {
        fprintf(stderr, "\nndraw: mp_radix_size_overestimate(a, 10, %zu) failed - %s\n", size, mp_error_to_string(err));
        exit(EXIT_FAILURE);
     }
     buf = (char *)malloc(size);
     if (buf == NULL) {
        fprintf(stderr, "\nndraw: malloc(%zu) failed\n", size);
        exit(EXIT_FAILURE);
     }
  
     printf("%s: ", name);
     if ((err = mp_to_decimal(a, buf, size)) != MP_OKAY) {
        fprintf(stderr, "\nndraw: mp_to_decimal(a, buf, %zu) failed - %s\n", size, mp_error_to_string(err));
        exit(EXIT_FAILURE);
     }
     printf("%s\n", buf);
     if ((err = mp_to_hex(a, buf, size)) != MP_OKAY) {
        fprintf(stderr, "\nndraw: mp_to_hex(a, buf, %zu) failed - %s\n", size, mp_error_to_string(err));
        exit(EXIT_FAILURE);
     }
     printf("0x%s\n", buf);
  
     free(buf);
  }
  
  void print_header(void)
  {
  #ifdef MP_16BIT
     printf("Digit size 16 Bit \n");
  #endif
  #ifdef MP_32BIT
     printf("Digit size 32 Bit \n");
  #endif
  #ifdef MP_64BIT
     printf("Digit size 64 Bit \n");
  #endif
     printf("Size of mp_digit: %u\n", (unsigned int)sizeof(mp_digit));
     printf("Size of mp_word: %u\n", (unsigned int)sizeof(mp_word));
     printf("MP_DIGIT_BIT: %d\n", MP_DIGIT_BIT);
     printf("MP_DEFAULT_DIGIT_COUNT: %d\n", MP_DEFAULT_DIGIT_COUNT);
  }
  

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