Fortran Wiki
Intrinsic procedures

Contents

• abs–Absolute value
• achar–Character in ASCII collating sequence
• acos–Arccosine function
• acosh–Inverse hyperbolic cosine function
• adjustl–Left adjust a string
• adjustr–Right adjust a string
• aimag–Imaginary part of complex number
• aint–Truncate to a whole number
• all–All values in MASK along DIM are true
• allocated–Status of an allocatable entity
• anint–Nearest whole number
• any–Any value in MASK along DIM is true
• asin–Arcsine function
• asinh–Inverse hyperbolic sine function
• associated–Status of a pointer or pointer/target pair
• atan–Arctangent function
• atan2–Arctangent function
• atanh–Inverse hyperbolic tangent function
• bessel_j0–Bessel function of the first kind of order 0
• bessel_j1–Bessel function of the first kind of order 1
• bessel_jn–Bessel function of the first kind
• bessel_y0–Bessel function of the second kind of order 0
• bessel_y1–Bessel function of the second kind of order 1
• bessel_yn–Bessel function of the second kind
• bit_size–Bit size inquiry function
• btest–Bit test function
• c_associated–Status of a C pointer
• c_funloc–Obtain the C address of a procedure
• c_f_procpointer–Convert C into Fortran procedure pointer
• c_f_pointer–Convert C into Fortran pointer
• c_loc–Obtain the C address of an object
• c_sizeof–Size in bytes of an expression
• ceiling–Integer ceiling function
• char–Character conversion function
• cmplx–Complex conversion function
• command_argument_count–Get number of command line arguments
• conjg–Complex conjugate function
• cos–Cosine function
• cosh–Hyperbolic cosine function
• count–Count function
• cpu_time–CPU elapsed time in seconds
• cshift–Circular shift elements of an array
• date_and_time–Date and time subroutine
• dble–Double conversion function
• digits–Significant digits function
• dim–Positive difference
• dot_product–Dot product function
• dprod–Double product function
• eoshift–End-off shift elements of an array
• epsilon–Epsilon function
• erf–Error function
• erfc–Error function
• erfc_scaled–Error function
• exp–Exponential function
• exponent–Exponent function
• float–Convert integer to default real
• floor–Integer floor function
• fraction–Fractional part of the model representation
• gamma–Gamma function
• get_command–Get the entire command line
• get_command_argument–Get command line arguments
• get_environment_variable–Get an environmental variable
• huge–Largest number of a kind
• hypot–Euclidean distance function
• iachar–Code in ASCII collating sequence
• iand–Bitwise logical and
• ibclr–Clear bit
• ibits–Bit extraction
• ibset–Set bit
• ichar–Character-to-integer conversion function
• ieor–Bitwise logical exclusive or
• index–Position of a substring within a string
• int–Convert to integer type
• ior–Bitwise logical inclusive or
• is_iostat_end–Test for end-of-file value
• is_iostat_eor–Test for end-of-record value
• ishft–Shift bits
• ishftc–Shift bits circularly
• kind–Kind of an entity
• lbound–Lower dimension bounds of an array
• leadz–Number of leading zero bits of an integer
• len–Length of a character entity
• len_trim–Length of a character entity without trailing blank characters
• lge–Lexical greater than or equal
• lgt–Lexical greater than
• lle–Lexical less than or equal
• llt–Lexical less than
• log–Logarithm function
• log10–Base 10 logarithm function
• log_gamma–Logarithm of the Gamma function
• logical–Convert to logical type
• matmul–matrix multiplication
• max–Maximum value of an argument list
• maxexponent–Maximum exponent of a real kind
• maxloc–Location of the maximum value within an array
• maxval–Maximum value of an array
• merge–Merge variables
• min–Minimum value of an argument list
• minexponent–Minimum exponent of a real kind
• minloc–Location of the minimum value within an array
• minval–Minimum value of an array
• mod–Remainder function
• modulo–Modulo function
• move_alloc–Move allocation from one object to another
• mvbits–Move bits from one integer to another
• nearest–Nearest representable number
• new_line–New line character
• nint–Nearest whole number
• not–Logical negation
• null–Function that returns an disassociated pointer
• pack–Pack an array into an array of rank one
• precision–Decimal precision of a real kind
• present–Determine whether an optional dummy argument is specified
• product–Product of array elements
• radix–Base of a model number
• random_number–Pseudo-random number
• random_seed–Initialize a pseudo-random number sequence
• range–Decimal exponent range of a real kind
• real–Convert to real type
• repeat–Repeated string concatenation
• reshape–Function to reshape an array
• rrspacing–Reciprocal of the relative spacing
• scale–Scale a real value
• scan–Scan a string for the presence of a set of characters
• selected_char_kind–Choose character kind
• selected_int_kind–Choose integer kind
• selected_real_kind–Choose real kind
• set_exponent–Set the exponent of the model
• shape–Determine the shape of an array
• sign–Sign copying function
• sin–Sine function
• sinh–Hyperbolic sine function
• size–Determine the size of an array
• sngl–Convert double precision real to default real
• spacing–Smallest distance between two numbers of a given type
• spread–Add a dimension to an array
• sqrt–Square-root function
• sum–Sum of array elements
• system_clock–Time function
• tan–Tangent function
• tanh–Hyperbolic tangent function
• tiny–Smallest positive number of a real kind
• trailz–Number of trailing zero bits of an integer
• transfer–Transfer bit patterns
• transpose–Transpose an array of rank two
• trim–Remove trailing blank characters of a string
• ubound–Upper dimension bounds of an array
• unpack–Store the elements of a vector in an array of higher rank
• verify–Scan a string for the absence of a set of characters

Note: The descriptions of these intrinsics were originally taken from the GNU Fortran manual. Like the Fortran Wiki itself, the GNU Fortran manual is licensed under the GNU Free Documentation License.