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utils-std

Collection of commonly available Unix tools git clone https://anongit.hacktivis.me/git/utils-std.git

absu.h (846B)

    

  1. // SPDX-FileCopyrightText: 2017 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
  2. // SPDX-License-Identifier: CC0-1.0 OR WTFPL
  4. // unsigned by definition reclaims the sign bit of their associated
  5. // signed representation, meaning you can always represent the absolute
  6. // values in an unsigned, even in two's complement where keeping
  7. // a signed representation would cause an error.
  8. //
  9. // Sadly the abs() family of functions in <stdint.h> is misdesigned
  11. extern unsigned int
  12. absu(int a)
  13. {
  14. 	if(a >= 0)
  15. 		return (unsigned int)a;
  16. 	else
  17. 		return (unsigned int)-a;
  18. }
  20. extern long unsigned int
  21. labsu(long int a)
  22. {
  23. 	if(a >= 0)
  24. 		return (long unsigned int)a;
  25. 	else
  26. 		return (long unsigned int)-a;
  27. }
  29. extern long long unsigned int
  30. llabsu(long long int a)
  31. {
  32. 	if(a >= 0)
  33. 		return (long long unsigned int)a;
  34. 	else
  35. 		return (long long unsigned int)-a;
  36. }