dos33fsprogs/utils/asoft_basic-utils/float_convert.c
Vince Weaver b1238af49d re-arranged the entire directory structure
this will probably upset people
2021-01-05 15:29:31 -05:00

36 lines
749 B
C

#include <stdio.h>
int main(int argc, char **argv) {
// long long values[5]={0x84,0x80,0,0,0}; // 8
// long long values[5]={0x80,0xcc,0xcc,0xcc,0xcc}; // .8
long long values[5]={0x7c,0xf7,0x95,0x54,0xfa}; // .8
long long exponent,mantissa,sign;
long long integer;
double fp=0;
exponent=values[0]-0x80;
sign=1;
// below only true if packed */
// sign=(values[1]&0x80)?-1:1;
mantissa=((values[1]|0x80)<<24)|
(values[2]<<16)|
(values[3]<<8)|
(values[4]);
integer=mantissa>>(32-exponent);
if (mantissa==0) {
printf("DIV BY ZERO\n");
return 0;
}
fp=(double)mantissa/(double)(1ULL<<32);
printf("Sign=%lld Mantissa=%llx Exponent=%llx\n",sign,mantissa,exponent);
printf("Integer=%lld fp=%lf\n",integer,fp);
return 0;
}