[c] 型の値範囲

バイナリデータを扱うようになって意識するようになったのでメモ

#include
#include

int main(int argc,char **argv){
   printf("size of char: %d bit\n",CHAR_BIT);
   printf("         char  range is %d -> %d\n",CHAR_MIN,CHAR_MAX);
   printf("  signed char  range is %d -> %d\n",SCHAR_MIN,SCHAR_MAX);
   printf("unsigned char  range is 0 -> %u\n",UCHAR_MAX);
   printf("         int   range is %d -> %d\n",INT_MIN,INT_MAX);
   printf("unsigned int   range is 0 -> %u\n",UINT_MAX);
   printf("         short range is %d -> %d\n",SHRT_MIN,SHRT_MAX);
   printf("unsigned short range is 0 -> %u\n",USHRT_MAX);
   printf("         long  range is %ld -> %ld\n",LONG_MIN,LONG_MAX);
   printf("unsigned long  range is 0 -> %lu\n",ULONG_MAX);
   return 0;
}

以下がi386環境での実行結果

size of char: 8 bit
         char  range is -128 -> 127
  signed char  range is -128 -> 127
unsigned char  range is 0 -> 255
         int   range is -2147483648 -> 2147483647
unsigned int   range is 0 -> 4294967295
         short range is -32768 -> 32767
unsigned short range is 0 -> 65535
         long  range is -2147483648 -> 2147483647
unsigned long  range is 0 -> 4294967295

以下がamd64環境での実行結果

size of char: 8 bit
         char  range is -128 -> 127
  signed char  range is -128 -> 127
unsigned char  range is 0 -> 255
         int   range is -2147483648 -> 2147483647
unsigned int   range is 0 -> 4294967295
         short range is -32768 -> 32767
unsigned short range is 0 -> 65535
         long  range is -9223372036854775808 -> 9223372036854775807
unsigned long  range is 0 -> 18446744073709551615