Movatterモバイル変換


[0]ホーム

URL:


cppreference.com
Namespaces
Variants
    Actions

      cosh, coshf, coshl

      From cppreference.com
      <c‎ |numeric‎ |math
       
       
       
      Common mathematical functions
      Functions
      Basic operations
      (C99)
      (C99)
      (C99)
      (C99)(C99)(C99)(C23)
      Maximum/minimum operations
      (C99)
      (C99)
      Exponential functions
      (C23)
      (C99)
      (C99)
      (C23)
      (C23)

      (C99)
      (C99)(C23)
      (C23)
      (C23)
      Power functions
      (C99)
      (C23)
      (C23)

      (C99)
      (C23)
      (C23)
      Trigonometric and hyperbolic functions
      (C23)
      (C23)
      (C23)
      (C23)
      cosh
      (C99)
      (C99)
      (C99)
      Nearest integer floating-point
      (C99)(C99)(C99)
      (C23)(C23)(C23)(C23)
      Floating-point manipulation
      (C99)(C99)
      (C99)(C23)
      (C99)
      Narrowing operations
      (C23)
      (C23)
      (C23)
      (C23)
      (C23)
      (C23)
      Quantum and quantum exponent
      Decimal re-encoding functions
      Total order and payload functions
      Classification
      Error and gamma functions
      (C99)
      (C99)
      (C99)
      (C99)
      Types
      Macro constants
      Special floating-point values
      (C99)(C23)
      Arguments and return values
      Error handling
      Fast operation indicators
       
      Defined in header<math.h>
      float       coshf(float arg);
      (1)(since C99)
      double      cosh(double arg);
      (2)
      longdouble coshl(longdouble arg);
      (3)(since C99)
      Defined in header<tgmath.h>
      #define cosh( arg )
      (4)(since C99)
      1-3) Computes the hyperbolic cosine ofarg.
      4) Type-generic macro: If the argument has typelongdouble,coshl is called. Otherwise, if the argument has integer type or the typedouble,cosh is called. Otherwise,coshf is called. If the argument is complex, then the macro invokes the corresponding complex function (ccoshf,ccosh,ccoshl).

      Contents

      [edit]Parameters

      arg - floating-point value representing a hyperbolic angle

      [edit]Return value

      If no errors occur, the hyperbolic cosine ofarg (cosh(arg), or
      earg
      +e-arg
      2
      ) is returned.

      If a range error due to overflow occurs,+HUGE_VAL,+HUGE_VALF, or+HUGE_VALL is returned.

      [edit]Error handling

      Errors are reported as specified inmath_errhandling.

      If the implementation supports IEEE floating-point arithmetic (IEC 60559),

      • if the argument is ±0, 1 is returned
      • If the argument is ±∞, +∞ is returned
      • if the argument is NaN, NaN is returned

      [edit]Notes

      For the IEEE-compatible typedouble, if|arg| > 710.5, thencosh(arg) overflows.

      [edit]Example

      Run this code
      #include <errno.h>#include <fenv.h>#include <math.h>#include <stdio.h> // #pragma STDC FENV_ACCESS ONint main(void){printf("cosh(1) = %f\ncosh(-1)= %f\n", cosh(1), cosh(-1));printf("log(sinh(1) + cosh(1))=%f\n",log(sinh(1)+ cosh(1)));// special valuesprintf("cosh(+0) = %f\ncosh(-0) = %f\n", cosh(0.0), cosh(-0.0));// error handlingerrno=0;feclearexcept(FE_ALL_EXCEPT);printf("cosh(710.5) = %f\n", cosh(710.5));if(errno==ERANGE)perror("    errno == ERANGE");if(fetestexcept(FE_OVERFLOW))puts("    FE_OVERFLOW raised");}

      Possible output:

      cosh(1) = 1.543081cosh(-1)= 1.543081log(sinh(1) + cosh(1))=1.000000cosh(+0) = 1.000000cosh(-0) = 1.000000cosh(710.5) = inf    errno == ERANGE: Numerical result out of range    FE_OVERFLOW raised

      [edit]References

      • C23 standard (ISO/IEC 9899:2024):
      • 7.12.5.4 The cosh functions (p: TBD)
      • 7.25 Type-generic math <tgmath.h> (p: TBD)
      • F.10.2.4 The cosh functions (p: TBD)
      • C17 standard (ISO/IEC 9899:2018):
      • 7.12.5.4 The cosh functions (p: 176)
      • 7.25 Type-generic math <tgmath.h> (p: 272-273)
      • F.10.2.4 The cosh functions (p: 379)
      • C11 standard (ISO/IEC 9899:2011):
      • 7.12.5.4 The cosh functions (p: 241)
      • 7.25 Type-generic math <tgmath.h> (p: 373-375)
      • F.10.2.4 The cosh functions (p: 520)
      • C99 standard (ISO/IEC 9899:1999):
      • 7.12.5.4 The cosh functions (p: 222)
      • 7.22 Type-generic math <tgmath.h> (p: 335-337)
      • F.9.2.4 The cosh functions (p: 457)
      • C89/C90 standard (ISO/IEC 9899:1990):
      • 4.5.3.1 The cosh function

      [edit]See also

      (C99)(C99)
      computes hyperbolic sine (\({\small\sinh{x} }\)sinh(x))
      (function)[edit]
      (C99)(C99)
      computes hyperbolic tangent (\({\small\tanh{x} }\)tanh(x))
      (function)[edit]
      (C99)(C99)(C99)
      computes inverse hyperbolic cosine (\({\small\operatorname{arcosh}{x} }\)arcosh(x))
      (function)[edit]
      (C99)(C99)(C99)
      computes the complex hyperbolic cosine
      (function)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=c/numeric/math/cosh&oldid=172005"

      [8]ページ先頭

      ©2009-2025 Movatter.jp