# sinhf(3) [freebsd man page]

```SINH(3) 						   BSD Library Functions Manual 						   SINH(3)

NAME
sinh, sinhf, sinhl -- hyperbolic sine function

LIBRARY
Math Library (libm, -lm)

SYNOPSIS
#include <math.h>

double
sinh(double x);

float
sinhf(float x);

long double
sinhl(long double x);

DESCRIPTION
The sinh(), sinhf(), and sinhl() functions compute the hyperbolic sine of x.

acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), csinh(3), math(3), sin(3), tan(3), tanh(3)

STANDARDS
The sinh() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD								  August 17, 2013							       BSD```

## Check Out this Related Man Page

```sinh(3) 						     Library Functions Manual							   sinh(3)

NAME
sinh, cosh, tanh - Hyperbolic functions

LIBRARY
Math Library (libm.a)

SYNOPSIS
#include <math.h>

double  sinh   (double  x);  float  sinhf (float  x); long double sinhl	(long double x); double cosh  (double x); float  coshf (float  x);
long double coshl  (long double x); double tanh	(double x); float  tanhf (float  x); long double tanhl	(long double x);

STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:

cosh():	XPG4

sinh():	XPG4

tanh():	XPG4

DESCRIPTION
The sinh(), sinhf(), and sinhl() functions compute the hyperbolic sine of x.  Both sinh(x), sinhf(x), and sinhl(x) are defined as (exp(x) -
exp(-x))/2.

The  cosh(), coshf(),  and coshl() functions compute the hyperbolic cosine of x.  Both cosh(x), coshf(x), and coshl(x) are defined as (e**x
+ e**(-x))/2.

The tanh(), tanhf(), and tanhl() functions compute the hyperbolic tangent of x.	Both tanh(x), tanhf(x), and tanhl(x) are defined as  (e**x
- e**(-x))/(e**x + e**(-x)).

The following table describes function behavior in response to exceptional arguments:

--------------------------------------------------------------------
Function 		  Exceptional Argument	  Routine Behavior
--------------------------------------------------------------------
sinh(), sinhf(), sinhl()   |x|>ln(2 * max_float)   Overflow

cosh(), coshf(), coshl()   |x|>ln(2 * max_float)   Overflow
--------------------------------------------------------------------

The following table lists boundary values used by these functions:

---------------------------------------------------------------------
Value Name	   Data Type   Hexadecimal Value   Decimal Value
---------------------------------------------------------------------
ln(2 * max_float)   S_FLOAT     42B2D4FC 	   89.41599

T_FLOAT     408633CE8FB9F87E    710.475860073943
---------------------------------------------------------------------
delim off

sinh(3)```
Man Page

## The Whole Story on #! /usr/bin/ksh

Introduction Originally, we only had one shell on unix. When ran a command, the shell would attempt to invoke one of the exec() system calls on it. It the command was an executable, the exec would succeed and the command would run. If the exec() failed, the shell would not give up, instead it...

## FreeBSD Kernel Internals, Dr. Marshall Kirk McKusick

FreeBSD Kernel Internals, Dr. Marshall Kirk McKusick nwbqBdghh6E The first hour of Marshall Kirk McKusick's course on FreeBSD kernel internals based on his book, The Design and Implementation of the FreeBSD Operating System.

## Unix File Permissions

Introduction I have seen some misinformation regarding Unix file permissions. I will try to set the record straight. Take a look at this example of some output from ls: \$ ls -ld /usr/bin /usr/bin/cat drwxrwxr-x 3 root bin 8704 Sep 23 2004 /usr/bin -r-xr-xr-x 1 bin bin ...

## Memory Leaks

Suppose I have a main() function with only one malloc statement allocating say some 1 gb memory. Also say my system has 1 gb of ram. main() { malloc(1gb) return(0) } The program above exits without freeing the memory. In this case will the 1 gb of heap memory be returned...

## Scripts without shebang

I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning . Does this mean that it will run on any shell ? Is it a good practice to create scripts (even ad-hoc ones) without shebang ?

## Is UNIX an open source OS ?

Hi everyone, I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX. Ok onto business, my questions are-: Was/Is UNIX ever an open source operating system ? If UNIX was...

## A simple UNIXtime component in Vue.js

A shout out to Scott who gave me a helping hand to turn a simple sample Vue.js app I wrote yesterday into a Vue.js component: Vue.component("unix-time", { template: `<div class="time">{{unixtime}}</div>`, data() { return { unixtime: "" }; }, methods: { ...

## Reason for no directory creation date

i read here that linux provides no way to determine when a directory was created. https://www.unix.com/shell-programming-and-scripting/157874-creation-date-directory.htmlI have a directory /home/andy/scripts that had a README file in it. That file says I put the script in that directory and...

## Valid separator in time and date format

Hello. I can use any particular (stupid or not) format when using bash date command. Example : ~> date --date "now" '+%Y-%m-%d %H!%M!%S' 2019-06-03 12!55!33or ~> date --date "now" '+%Y£%m£%d %H¤%M¤%S' 2019£06£03 12¤57¤36 or ~> date --date "now" '+%Y-%m-%d %H-%M-%S' 2019-06-03 12-58-51 ...

## UNIX Environment Setup - (Just starting!)

Morning All So, I am starting looking into the world of UNIX for a new job (luckily not my primary function!) and I am looking to get stared. Like anything I seem to learn best by trying things out first in an environment but I have a key question: Currently I use Oracle VirtualBox, can...

## Is it safe to install x86 Solaris 10 U6 after installed-Linux-and-FreeBSD?

I've installed Slack 14.2 on /dev/sda1 (/dev/sda2 is swap) and FreeBSD 12 on /dev/sda3 and lilo is the boot manager. FreeBSD slices are as follows; / on /dev/ada0S3a, swap on /dev/ada0s3e, /var on /dev/ada0s3b, /tmp on /dev/ada0s3d and /usr on /dev/ada0s3f. I hesitate to install Solaris 10...

## Controlling user input

I'm trying to use a bash script for a psych experiment that involves listening to sound files and responding. If I have something like the code below, how can I make sure that a key press is assigned to RESPONSE only after the second echo statement? for i in 1 2 3; do echo "Ready?" sleep 2 ...