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Calculates the square root.

Syntax

This function is overloaded in and (see complex sqrt and valarray sqrt ). Additional overloads are provided in this header ( ) for the integral types: These overloads effectively cast x to a double before calculations (defined for T being any integral type ). This function is.

Parameters

x
Non-negative floating-point value

Remarks

Dev C++ Sqrt Problems 1

Nov 05, 2008  The problem with square and sqrt function. C / C Forums on Bytes. Home topics c / c questions the problem with square and sqrt function. It's precisely the biggest problem with your program. What you need is to provide a declaration for square. A definition is also needed, but. Jan 10, 2008  looking at the problem i cant really see one, the sqrt function should work fine, try building a new console application also, the std:: you refer to is a namespace, if you put the code. The standard library is post 99 C has deprecated the.h headers. Do not rely on the backward compatibility support. Use the modern standard library headers.

Because C++ allows overloading, you can call overloads of sqrt that take float or longdouble types. In a C program, sqrt always takes and returns double.

By default, this function's global state is scoped to the application. To change this, see Global state in the CRT.

Return Value

C++ Sqrt Not Working

The sqrt functions return the square-root of x. By default, if x is negative, sqrt returns an indefinite NaN.

Input	SEH Exception	_matherr Exception
± QNAN,IND	none	_DOMAIN
- ∞	none	_DOMAIN
x<0	none	_DOMAIN

Requirements

Function	C header	C++ header
sqrt, sqrtf, sqrtl	<math.h>	<cmath>

For compatibility information, see Compatibility.

Example

Dev C++ Sqrt Problems 7

See also

Dev C++ Sqrt Problems 2

Floating-Point Support
exp, expf, expl
log, logf, log10, log10f
pow, powf, powl
_CIsqrt