URL
https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk
Subversion Repositories openrisc_me
[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libm/] [mathfp/] [s_cosh.c] - Rev 307
Go to most recent revision | Compare with Previous | Blame | View Log
/* @(#)z_cosh.c 1.0 98/08/13 */ /* FUNCTION <<cosh>>, <<coshf>>---hyperbolic cosine ANSI_SYNOPSIS #include <math.h> double cosh(double <[x]>); float coshf(float <[x]>) TRAD_SYNOPSIS #include <math.h> double cosh(<[x]>) double <[x]>; float coshf(<[x]>) float <[x]>; DESCRIPTION <<cosh>> computes the hyperbolic cosine of the argument <[x]>. <<cosh(<[x]>)>> is defined as @ifnottex . (exp(x) + exp(-x))/2 @end ifnottex @tex $${(e^x + e^{-x})} \over 2$$ @end tex Angles are specified in radians. <<coshf>> is identical, save that it takes and returns <<float>>. RETURNS The computed value is returned. When the correct value would create an overflow, <<cosh>> returns the value <<HUGE_VAL>> with the appropriate sign, and the global value <<errno>> is set to <<ERANGE>>. You can modify error handling for these functions using the function <<matherr>>. PORTABILITY <<cosh>> is ANSI. <<coshf>> is an extension. QUICKREF cosh ansi pure coshf - pure */ /****************************************************************** * Hyperbolic Cosine * * Input: * x - floating point value * * Output: * hyperbolic cosine of x * * Description: * This routine returns the hyperbolic cosine of x. * *****************************************************************/ #include "fdlibm.h" #include "zmath.h" #ifndef _DOUBLE_IS_32BITS double _DEFUN (cosh, (double), double x) { return (sineh (x, 1)); } #endif /* _DOUBLE_IS_32BITS */
Go to most recent revision | Compare with Previous | Blame | View Log