ABS (A)

It returns the absolute value of A

AIMAG (Z)

It returns the imaginary part of a complex number Z

AINT (A [, KIND])

It truncates fractional part of A towards zero, returning a real, whole number.

ANINT (A [, KIND])

It returns a real value, the nearest integer or whole number.

CEILING (A [, KIND])

It returns the least integer greater than or equal to number A.

CMPLX (X [, Y, KIND])

It converts the real variables X and Y to a complex number X+iY; if Y is absent, 0 is used.

CONJG (Z)

It returns the complex conjugate of any complex number Z.

DBLE (A)

It converts A to a double precision real number.

DIM (X, Y)

It returns the positive difference of X and Y.

DPROD (X, Y)

It returns the double precision real product of X and Y.

FLOOR (A [, KIND])

It provides the greatest integer less than or equal to number A.

INT (A [, KIND])

It converts a number (real or integer) to integer, truncating the real part towards zero.

MAX (A1, A2 [, A3,…])

It returns the maximum value from the arguments, all being of same type.

MIN (A1, A2 [, A3,…])

It returns the minimum value from the arguments, all being of same type.

MOD (A, P)

It returns the remainder of A on division by P, both arguments being of the same type (A-INT(A/P)*P)

MODULO (A, P)

It returns A modulo P: (A-FLOOR(A/P)*P)

NINT (A [, KIND])

It returns the nearest integer of number A

REAL (A [, KIND])

It Converts to real type

SIGN (A, B)

It returns the absolute value of A multiplied by the sign of P. Basically it transfers the of sign of B to A.

ACOS (X)

It returns the inverse cosine in the range (0, π), in radians.

ASIN (X)

It returns the inverse sine in the range (-π/2, π/2), in radians.

ATAN (X)

It returns the inverse tangent in the range (-π/2, π/2), in radians.

ATAN2 (Y, X)

It returns the inverse tangent in the range (-π, π), in radians.

COS (X)

It returns the cosine of argument in radians.

COSH (X)

It returns the hyperbolic cosine of argument in radians.

EXP (X)

It returns the exponential value of X.

LOG (X)

It returns the natural logarithmic value of X.

LOG10 (X)

It returns the common logarithmic (base 10) value of X.

SIN (X)

It returns the sine of argument in radians.

SINH (X)

It returns the hyperbolic sine of argument in radians.

SQRT (X)

It returns square root of X.

TAN (X)

It returns the tangent of argument in radians.

TANH (X)

It returns the hyperbolic tangent of argument in radians.

DIGITS (X)

It returns the number of significant digits of the model.

EPSILON (X)

It returns the number that is almost negligible compared to one. In other words, it returns the smallest value such that REAL( 1.0, KIND(X)) + EPSILON(X) is not equal to REAL( 1.0, KIND(X)).

HUGE (X)

It returns the largest number of the model

MAXEXPONENT (X)

It returns the maximum exponent of the model

MINEXPONENT (X)

It returns the minimum exponent of the model

PRECISION (X)

It returns the decimal precision

RADIX (X)

It returns the base of the model

RANGE (X)

It returns the decimal exponent range

TINY (X)

It returns the smallest positive number of the model

EXPONENT (X)

It returns the exponent part of a model number

FRACTION (X)

It returns the fractional part of a number

NEAREST (X, S)

It returns the nearest different processor number in given direction

RRSPACING (X)

It returns the reciprocal of the relative spacing of model numbers near given number

SCALE (X, I)

It multiplies a real by its base to an integer power

SET_EXPONENT (X, I)

it returns the exponent part of a number

SPACING (X)

It returns the absolute spacing of model numbers near given number

BIT_SIZE (I)

It returns the number of bits of the model

BTEST (I, POS)

Bit testing

IAND (I, J)

Logical AND

IBCLR (I, POS)

Clear bit

IBITS (I, POS, LEN)

Bit extraction

IBSET (I, POS)

Set bit

IEOR (I, J)

Exclusive OR

IOR (I, J)

Inclusive OR

ISHFT (I, SHIFT)

Logical shift

ISHFTC (I, SHIFT [, SIZE])

Circular shift

NOT (I)

Logical complement

ACHAR (I)

It returns the Ith character in the ASCII collating sequence.

ADJUSTL (STRING)

It adjusts string left by removing any leading blanks and inserting trailing blanks

ADJUSTR (STRING)

It adjusts string right by removing trailing blanks and inserting leading blanks.

CHAR (I [, KIND])

It returns the Ith character in the machine specific collating sequence

IACHAR (C)

It returns the position of the character in the ASCII collating sequence.

ICHAR (C)

It returns the position of the character in the machine (processor) specific collating sequence.

INDEX (STRING, SUBSTRING [, BACK])

It returns the leftmost (rightmost if BACK is .TRUE.) starting position of SUBSTRING within STRING.

LEN (STRING)

It returns the length of a string.

LEN_TRIM (STRING)

It returns the length of a string without trailing blank characters.

LGE (STRING_A, STRING_B)

Lexically greater than or equal

LGT (STRING_A, STRING_B)

Lexically greater than

LLE (STRING_A, STRING_B)

Lexically less than or equal

LLT (STRING_A, STRING_B)

Lexically less than

REPEAT (STRING, NCOPIES)

Repeated concatenation

SCAN (STRING, SET [, BACK])

It returns the index of the leftmost (rightmost if BACK is .TRUE.) character of STRING that belong to SET, or 0 if none belong.

TRIM (STRING)

Removes trailing blank characters

VERIFY (STRING, SET [, BACK])

Verifies the set of characters in a string

KIND (X)

It returns the kind type parameter value.

SELECTED_INT_KIND (R)

It returns kind of type parameter for specified exponent range.

SELECTED_REAL_KIND ([P, R])

Real kind type parameter value, given precision and range

LOGICAL (L [, KIND])

Convert between objects of type logical with different kind type parameters