FORTRAN Reference Manual

Intrinsic Functions
FORTRAN Reference Manual—528615-001
8-29
SQRT Function
Considerations
•
The result type of the SINH function is the same as the type of its argument.
•
The value of SINH (x) is defined as
(EXP (x) - EXP (-x))/2.0
•
Note that
SINH (-x) = -SINH (x)
Example of the SINH Function
y = SINH (x)
SQRT Function
The SQRT function returns the square root of a number.
The table below shows the argument and function type for the SQRT generic function
and its associated specific functions.
Considerations
•
The result type of the SQRT function is the same as the type of its argument.
•
For a real or double precision argument x < 0, program execution terminates
abnormally with an error message.
•
For a complex argument z = CMPLX (x, y), the value of SQRT (z) is defined as
CMPLX ( , SIGN ( , )
•
If ABS (z) < x, program execution terminates abnormally with an error message.
Example of the SQRT Function
COMPLEX y, z
z = CSQRT (y)
a = SQRT (b)
Syntax Argument Type Function Type
SQRT (x)
SQRT (x) Real Real
DSQRT (x) Double Precision Double Precision
CSQRT (x) Complex Complex
x is an arithmetic expression.
ZX+()2.0⁄ ZX–()2.0⁄ Y°)°