|
|
|
|
|
|
|
HP-UX Reference > S
sqrt(3M)HP-UX 11i Version 2: December 2007 Update |
|
NAMEsqrt(), sqrtf(), sqrtl(), sqrtw(), sqrtq() — square root functions DESCRIPTIONsqrt() returns the non-negative square root of x. sqrtf() is a float version of sqrt(); it takes a float argument and returns a float result. USAGETo use these functions compile either with the default -Ae option or with the -Aa and the -D_HPUX_SOURCE options. To use (for Itanium-based systems) sqrtw() or sqrtq(), compile also with the -fpwidetypes option. To use any of these functions, make sure your program includes <math.h>, and link in the math library by specifying -lm on the compiler or linker command line. For more information, see the HP-UX Floating-Point Guide. RETURN VALUEIf x is +INFINITY, sqrt() returns +INFINITY. If x is NaN, sqrt() returns NaN. If x is less than zero, sqrt() returns NaN and raises the invalid floating-point exception. sqrt() raises the inexact exception whenever a rounded result does not equal the mathematical result. |
||||||||||||||||||||||||||||
|
|||||||||
