//p26.c -- @CopyLeft by tsaiwn@csie.nctu.edu.tw
// demo the Limition of float in C Language
// Floating overflow 實數溢位 !  太大存不進去分配的空間
// IEEE754/854 document
/* s eeeeeee efffffff gggggggg hhhhhhhh */
/* +/- 1.fffffffgggggggghhhhhhhh * 2**(eeeeeeee - 127) */
/*  eeeeeeee: Exponent base 2 excess 127 */
#include<stdio.h>
#include<math.h>
int main( ) {
    float ans = pow(2,125);  /* 2 的 125 次方 */
    int k;
    for(k=1; k<= 6; ++k) {
        printf("= %f\n", ans );
        ans *= 2.0;
    }
    printf("Hit RETURN key..."); 
    getchar( ); return 0;
}
/******
C:\test2> gcc p26.c
C:\test2> a.exe
= 42535295865117308000000000000000000000.000000
= 85070591730234616000000000000000000000.000000
= 170141183460469230000000000000000000000.000000
= 1.#INF00
= 1.#INF00
= 1.#INF00
Hit RETURN key...
C:\test2>
********************/