Purpose
Square root.
Class
Elemental function
Argument type and attributes
- X
- An INTENT(IN) REAL or COMPLEX. Unless X is COMPLEX, its value must be greater than or equal to zero.
Result type and attributes
Same as X.
Result value
- It has a value equal to the square root of X.
The -qxlf2003=signdzerointr option controls whether you get Fortran 2003 behavior. See qxlf2003
- If the result type is complex, its value is the principal value with the real part greater than or equal to zero. If the real part is zero, the imaginary part is greater than or equal to zero.
If the result type is complex, its value is the
principal value with the real part greater than or equal to zero.
If the real part of the result is zero, the imaginary part has the
same sign as the imaginary part of X. 
Examples
SQRT (4.0) has the value 2.0.
| Specific Name | Argument Type | Result Type | Pass As Arg? |
|---|---|---|---|
| SQRT | default real | default real | yes |
| DSQRT | double precision real | double precision real | yes |
| QSQRT | REAL(16) | REAL(16) | yes 1 |
| CSQRT 2 | default complex | default complex | yes |
| CDSQRT 2 | double complex | double complex | yes 1 |
| ZSQRT 2 | COMPLEX(8) | COMPLEX(8) | yes 1 |
| CQSQRT 2 | COMPLEX(16) | COMPLEX(16) | yes 1 |
Note:
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