# How do you write exponential powers in FORTRAN?

## How do you write exponential powers in FORTRAN?

EXP(X) computes the base e exponential of X . The type shall be REAL(*) or COMPLEX(*) . Return value: The return value has same type and kind as X .

**How do you write natural LOG in FORTRAN?**

LOG(X) computes the natural logarithm of X , i.e. the logarithm to the base e. The type shall be REAL or COMPLEX . Return value: The return value is of type REAL or COMPLEX .

### How do you use sqrt in FORTRAN?

For example, function SQRT() accepts a REAL argument whose value must be non-negative and computes and returns the square root of the argument. Therefore, SQRT(25.0) returns the square root of 25.0 and SQRT(-1.0) would cause an error since the argument is negative.

**What is EXP in computer?**

In computational complexity theory, the complexity class EXPTIME (sometimes called EXP or DEXPTIME) is the set of all decision problems that are solvable by a deterministic Turing machine in exponential time, i.e., in O(2) time, where p(n) is a polynomial function of n.

## How do you write scientific notation in Fortran?

Fortran can use also scientific notation to represent real numbers. The sequence “En” attached to the end of a number, where n is an integer, means that the number is to be multiplied by 10n. Here are various ways of writing the number 12.345: 1.2345E1 , .

**What is 0d0 in Fortran?**

Here are some random FORTRAN FAQ that I’ve accumulated through working through code. Q: What does 0d0 mean? A: Double precision 0. First 0 is the value, D means x10 to the power of, second 0 is the exponent. ( Reference)

### How do you write LOG10 in Fortran?

LOG10(X) computes the base 10 logarithm of X . The type shall be REAL . Return value: The return value is of type REAL or COMPLEX .

**What is IABS in Fortran?**

iabs(I) – Absolute value of an integer I (pre-90 Fortran abs didn’t like integer arguments.) sin(x) – Returns the sine of x (x is not an integer) cos(x) – Returns the cosine of x (x is not an integer) tan(x) – Returns the tangent of x (x is not an integer)

## How do I use Fortran mods?

MOD(A,P) computes the remainder of the division of A by P. It is calculated as A – (INT(A/P) * P) . Return value: The kind of the return value is the result of cross-promoting the kinds of the arguments.

**What is EXP in Fortran?**

Description: EXP(X) computes the base e exponential of X . Fortran 77 and later, has overloads that are GNU extensions. Elemental function.

### How is EXP calculated?

The EXP function finds the value of the constant e raised to a given number, so you can think of the EXP function as e^(number), where e ≈ 2.718. The exponential function can be used to get the value of e by passing the number 1 as the argument.

**What is format code in Fortran?**

The A format code transfers character data. is an optional width (0 ≤ w) specifying the number of characters to be transferred. If w is not specified, the entire string is transferred. On output, if w is greater than the length of the string, the string is right justified.