如何在C中打印长双倍的范围

Question

尝试打印Max＆amp; C中最小范围的Long Double偶然发现了不同格式说明符的问题，所以我尝试了以下代码中的每个建议：

#include<stdio.h>
#include<limits.h>
#include<float.h>
#include<math.h>
int main(void)
{
    printf("Data Type    Memory Size                  Range\n");
    printf("-------------------------------------------------------------     \n");
    printf("long double    %d bytes          %Lf to %Lf      |>(using %%Lf   as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes          %lf to %lf      |>(using %%lf    as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes                 %LG to %LG       |>    (using %%LG as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes     %E to %E |>(using %%E as format   specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes     %e to %e |>(using %%e as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes          %llf to %llf      |>(using %%llF as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes     %le to %le |>(using %%le as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("long double    %d bytes          %f to %f      |>(using %%f as format specifier)\n",sizeof(long double),LDBL_MIN,LDBL_MAX);
    printf("-------------------------------------------------------------\n");
    printf("NOTE: I'm trying to find the range of long double!\n");
    printf("      But none of the format specifiers seems to work! Please Help...\n");
    return 0;
}

但输出是：

根据https://www.tutorialspoint.com/cprogramming/c_data_types.htm

long double的内存大小：10个字节（我知道这可能会有所不同）

长双倍范围：3.4E-4932至1.1E + 4932

*但是我的代码输出在3.4E-4932到1.1E + 4932附近没有。但为什么？

Answer 1

编译器警告未完全启用。

许多编译器指出printf()说明符不匹配

说明符与long double和size_t（sizeof的返回类型）@melpomene

不匹配

  

L指定以下a，A，e，E，f，F，{{ 1}}或g转换规范适用于G参数。 C11dr§7.21.6.17

long double

Answer 2

开始

https://gcc.gnu.org/onlinedocs/libquadmath/#toc-GNU-Free-Documentation-License-1

CC=gcc

CFLAGS=-lm -ll -lquadmath -mlong-double-128

DEPS = 

OBJ = sizeof.o 

%.o: %.c $(DEPS)

    $(CC) -c -o $@ $< $(CFLAGS)

sizeof: $(OBJ)

    $(CC) -o $@ $^ $(CFLAGS)