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  1. #include <stdio.h>
  2.  
  3. #define BYTEBIN "%d%d%d%d%d%d%d%d"
  4. #define BYTE2BIN(byte)  \
  5.   (byte & 0x80 ? 1 : 0), \
  6.   (byte & 0x40 ? 1 : 0), \
  7.   (byte & 0x20 ? 1 : 0), \
  8.   (byte & 0x10 ? 1 : 0), \
  9.   (byte & 0x08 ? 1 : 0), \
  10.   (byte & 0x04 ? 1 : 0), \
  11.   (byte & 0x02 ? 1 : 0), \
  12.   (byte & 0x01 ? 1 : 0) 
  13.  
  14. int main(void) {
  15. 	float fa = 0.999999f;
  16.  
  17. 	unsigned int *ia = (unsigned int*)&fa;
  18. 	unsigned char *ba = (unsigned char*)&fa;
  19. 	printf("float %f in binary: "BYTEBIN" "BYTEBIN" "BYTEBIN" "BYTEBIN"\n",
  20. 	  fa, BYTE2BIN(ba[3]), BYTE2BIN(ba[2]), BYTE2BIN(ba[1]), BYTE2BIN(ba[0]));
  21.  
  22. 	return 0;
  23. }
  24.  
Success #stdin #stdout 0s 2292KB
comments (?)
stdin 
Standard input is empty
stdout 
float 0.999999 in binary: 00111111 01111111 11111111 11101111
https://ideone.com/Qlqu4W
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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