C Language Zemi

DBL_MAX --Constant representing the minimum positive value of double

DBL_MAX is a constant that represents the maximum positive value of double-double precision (64bit) floating point type. It can be used by including "float.h".

#include <stdio.h>
#include <float.h>

int main (void) {
  printf("%f\n", DBL_MAX);
}

The value of DBL_MAX.

1797693134862315708145274237317043567980705675258449965989174768031572607800285387605895586327668781715404589535143824642343213268894641827684675467035375169860499105765512820762454900903893289440758685084551339423045832369032229481658085593321233482747978824.

Constant representing the negative minimum value of double

The maximum negative value can be expressed by "-DBL_MAX" with a minus sign.