cosh(3)

cosh3

Hyperbolic cosine functions

Usage

#include <math.h>

double

cosh(double x);

float

coshf(float x);

long double

coshl(long double x);

Library

Math Library (libm, -lm)

Overview

The cosh(), coshf(), and coshl() functions compute the hyperbolic cosine of x.

Releases

87 releases since FreeBSD 2.0.5-RELEASE; the text changed 48 times.

  1. 2.0.5
  2. 2.1.5–2.1.7.1
  3. 2.2.2–2.2.5
  4. 2.2.6–2.2.8
  5. 2.2.9
  6. 3.0–3.2
  7. 3.3–3.5.1
  8. 4.0–4.2
  9. 4.3
  10. 4.4
  11. 4.5–4.11
  12. 5.0–5.3
  13. 5.4–5.5
  14. 6.0–6.2
  15. 6.3
  16. 6.4
  17. 7.0
  18. 7.1
  19. 7.2
  20. 7.3
  21. 7.4
  22. 8.0
  23. 8.1
  24. 8.2
  25. 8.3
  26. 8.4
  27. 9.0
  28. 9.1
  29. 9.2
  30. 9.3
  31. 10.0
  32. 10.1
  33. 10.2
  34. 10.3
  35. 10.4
  36. 11.0
  37. 11.1
  38. 11.2
  39. 11.3
  40. 11.4
  41. 12.0
  42. 12.1
  43. 12.2
  44. 12.3
  45. 12.4
  46. 13.0–13.1
  47. 13.2
  48. 13.3–14.5
  49. 15.0–16.0

Standards

The cosh() function conforms to ISO/IEC 9899:1990 (“ISO C90”).

History

The cosh() function first appeared in Version 7 AT&T UNIX.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.