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https://github.com/deater/dos33fsprogs.git
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36 lines
749 B
C
36 lines
749 B
C
#include <stdio.h>
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int main(int argc, char **argv) {
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// long long values[5]={0x84,0x80,0,0,0}; // 8
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// long long values[5]={0x80,0xcc,0xcc,0xcc,0xcc}; // .8
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long long values[5]={0x7c,0xf7,0x95,0x54,0xfa}; // .8
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long long exponent,mantissa,sign;
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long long integer;
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double fp=0;
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exponent=values[0]-0x80;
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sign=1;
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// below only true if packed */
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// sign=(values[1]&0x80)?-1:1;
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mantissa=((values[1]|0x80)<<24)|
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(values[2]<<16)|
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(values[3]<<8)|
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(values[4]);
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integer=mantissa>>(32-exponent);
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if (mantissa==0) {
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printf("DIV BY ZERO\n");
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return 0;
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}
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fp=(double)mantissa/(double)(1ULL<<32);
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printf("Sign=%lld Mantissa=%llx Exponent=%llx\n",sign,mantissa,exponent);
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printf("Integer=%lld fp=%lf\n",integer,fp);
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return 0;
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}
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