Computes square root and cube root functions.
or System V Math Library (libmsaa.a)
#include <math.h> double sqrt (x) double x;
long double sqrtl (x) long double x;
double cbrt (x) double x;
The sqrt subroutine, sqrtl subroutine, and cbrt subroutine compute the square root and cube root, respectively, of their parameters.
| Note: | Compile any routine that uses subroutines from the libm.a library with the -lm flag. To compile the sqrt.c file, for example, enter:
cc sqrt.c -lm |
| x | Specifies some double-precision floating-point value. |
For the sqrt subroutine, if the value of x is negative, a NaNQ is returned and the errno global variable is set to a EDOM value.
When using libmsaa.a (-lmsaa):
For the sqrt and the sqrtl subroutines, if the value of x is negative, a 0 is returned and the errno global variable is set to a EDOM value. A message indicating a DOMAIN error is printed on the standard error output.
These error-handling procedures may be changed with the matherr subroutine when using the libmsaa.a (-lmsaa) library.
These subroutines are part of Base Operating System (BOS) Runtime.
The cbrt subroutine is not part of the ANSI C Library.
The exp, expm1, log, log10, log1p, or pow subroutine.
Subroutines Overview AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.
128-Bit long double Floating-Point Format AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.