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Full Discussion: sqrt
Top Forums Programming sqrt Post 22392 by Perderabo on Monday 3rd of June 2002 07:56:54 AM
Old 06-03-2002
sqrt is in the math library. Add -lm to your cc command and ld will find it.
 

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sqrt(3M)																  sqrt(3M)

NAME
sqrt(), sqrtf(), sqrtl(), sqrtw(), sqrtq() - square root functions SYNOPSIS
HP Integrity Server Only DESCRIPTION
returns the non-negative square root of x. is a version of it takes a argument and returns a result. Integrity Server Only is a version of it takes a argument and returns a result. is an version of it takes an argument and returns an result. is equivalent to on HP-UX systems. USAGE
To use these functions compile either with the default option or with the and the options. To use (for Integrity servers) or compile also with the option. To use any of these functions, make sure your program includes and link in the math library by specifying on the compiler or linker command line. For more information, see the at the following site: RETURN VALUE
If x is +INFINITY, returns +INFINITY. If x is NaN, returns NaN. If x is less than zero, returns NaN and raises the invalid floating-point exception. raises the inexact exception whenever a rounded result does not equal the mathematical result. ERRORS
If x is less than zero, sets to [EDOM]. Integrity Server Only HP-UX functions on Integrity servers do not set by default. For setting, compile with the option and the (default) option. SEE ALSO
cbrt(3M), exp(3M), log(3M), pow(3M), math(5). STANDARDS CONFORMANCE
: SVID3, XPG4.2, ANSI C, ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'') : ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'') sqrt(3M)

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