The Fortran 95 is proposed as a standard, which means that any Fortran 95 compiler implements version, must be able to provide them: 115 solid processes, including 109 solid functions and 6 solid sub-routines. Of course, there is no exclusion that there are many compilers.
Table 14-1 Process Name of the Process and the corresponding variable element attribute
Class process name
Process name and its change
Process variable element type
ABS
ABS (a)
Cabs (a)
DABS (a)
IABS (A)
Default real
Default
Double precision
Default integer
ACOS
ACOS (X)
Dacos (X)
Default real
Double precision
AIMAG
AIMAG (Z)
Default
Aint
AINT (a)
DINT (a)
Default real
Double precision
Anint
Anint (a)
DNINT (a)
Default real
Double precision
Asin
Asin (x)
DSIN (X)
Default real
Double precision
Atan
Atan (a)
DTAN (a)
Default real
Double precision
Atan2
Atan2 (a)
DTAN2 (A)
Default real
Double precision
Charr
* Char (i)
Default integer
COS
COS (x)
CCOS (x)
DCOS (x)
Default real
Default
Double precision
Conjg
Conjg (x)
Default
Cosh
Cosh (x)
DCOSH (X)
Default real
Double precision
DIM
DIM (X, Y)
IDIM (X, Y)
Default real
Default integer
DPROD
DPROD (X, Y)
Default real
EXP
Exp (x)
CEXP (X)
DEXP (X)
Default real
Default
Double precision
IChar
* IChar (c)
Default character type
Index
Index (String, Substring)
Default character type
Int
* Int (a)
* IFix (a)
* IDint (a)
Default real
Default real
Double precision
Len
Len (String)
Default character type
LGE
* LGE (String_a, String_B)
Default character type
LGT
* LGT (String_a, String_B)
Default character type
LLE
* LLE (String_a, String_B)
Default character type
LLT
* LLT (String_a, String_B)
Default character type
Log
Alog (x)
Clog (x)
Dlog (x)
Default real
Default
Double precision
Log10
Alog10 (x)
DLOG10 (X)
Default real
Double precision
Max
Note 1
Note 2
* Max0 (A1, A2, A3, ...)
* AMAX1 (A1, A2, A3, ...)
* DMAX1 (A1, A2, A3, ...)
* Max1 (A1, A2, A3, ...)
* AMAX0 (A1, A2, A3, ...)
Default integer
Default real
Double precision
Default real
Default integer
MIN
Note 1
Note 2
* Min0 (A1, A2, A3, ...)
* Amin1 (A1, A2, A3, ...)
* Dmin1 (A1, A2, A3, ...)
* Min1 (A1, A2, A3, ...)
* Amin0 (A1, A2, A3, ...)
Default integer
Default real
Double precision
Default real
Default integer
MOD
MOD (A, P)
AMOD (A, P)
DMOD (A, P)
Default integer
Default real
Double precision
Nort
Nint (a)
IDnint (a)
Default real
Double precision
REAL
* Real (a)
* Float (a)
* SNGL (a)
Default integer
Default integer
Double precision
Sign
SIGN (A, B)
Dsign (a, b)
Isign (A, B)
Default real
Double precision
Default integer
Sin
Sin (x)
Csin (x)
DSIN (X)
Default real
Default
Double precision
Sinh
SINH (X)
DSINH (x)
Default real
Double precision
SQRT
SQRT (x)
CSQRT (x)
SDQRT (X)
Default real
Default
Double precision
Tan
Tan (x)
DTAN (X)
Default real
Double precision
Tanh
Tanh (x)
DTANH (X)
Default real
Double precision
Note 1: This function does not have the corresponding class process name, which is the default integer.
Note 2: This function does not have the corresponding class process name, which is the default real.
Note 3: The function marked as an asterisk * cannot be used as the real.
Note 4: Some procedures are the same as their class process name.
Table 14-2 Name of array query functions and return values
Function name
return value
Allocated
Distribution state of the variable element array
LBound
One array or array of lower bounds
Shape
The number of elements of arrays at each dimension
Size
The number of arrays, that is, the number of all elements
Ubound
One array or an array of upstemics
Table 14-3 Numerical mode query function name and return value
Function name
return value
DIGITS
N value in integer mode and real-mode formula
Epsilon
Transverse
Value
Hue
The maximum value that can be represented according to the integer mode and the real number mode
Minexponent
Minimum E value that can be achieved in real variable yuan
MaxExponent
The maximum E value that can be achieved by real variation
Precision
Real or plural 10 enrollment accuracy
Radix
The base value in the integer mode and real-mode formula
Range
Integer, real or plural 10-en-powerful range
Tiny
Minimal positive value achieved by real variable yuan
note:
● These functions do not need to be predefined.
● They are all types of processes because they can be used for any type of real-beam.
● In addition to EPSILON, MINEXPONENT, MAXEXPONENT these three functions, they can be used for arbitrary type integer.
Table 14-4 Name and return value of digital operation functions
Function name
return value
Exponent
Real value real mode represents the E value inside the formula
FRAction
Real value of the fractional part
Nearest
The value of the system can be expressed in a given direction is closest to the first variable element
Rrspacing
Countdown of the minimum spacing near the vicinity
Scale
Replace the E value with a given value
Set_exponent
Set the E value to a given value
Spacing
Minimum absolute spacing near the vicinity
These seven functions can only be applied to real numbers, which can be any type of real value, and are both a gradual function.
Table 14-5 The name of the conversion function and the return value
Function name
return value
Achar
Character in the specified location of the ASCII character set
AIMAG
Multiple ingredient
Aint
Truncate a real number as a real integer
Anint
Truncate a real number as the closest real shape
Charr
Character in the specified location of the system character set
CMPLX
Compared with the changed energy
Conjg
Composition of complex variable
Dble
Double-precision value corresponding to the change
Iachar
Specify the position in the ASCII character set
IBITS
Sub strings in the integer changed elements represented by the position
IChar
Specify the position in the system character set
Int
Variable elements are truncated
Logical
Logical value corresponding to the change
Nort
Truncate a real number as the closest value REAL
Real value corresponding to the change
Table 14-6 Numerical calculation function name and return value
Function name
return value
ABS
Defolute value
ACOS
Anti-cavity
Asin
Anti-synthetic value
Atan
Anti-rotate cut value
Atan2
Multi-angle curve value of complex variable energy (X, Y)
Ceiling
Minimum integer value greater than or equal to variable
COS
Change the cosine value
Cosh
Corresponding dichroic cosine value
DIM
If the difference between 2 variable elements is positive, the difference is returned, otherwise it returns 0
DOT_PRODUCT
2 rank of array of arrays 1
DPROD
2 single-precision value double precision product
EXP
Natural index function
Floor
The maximum integer value of less than or equal to the variable value
Log
Natural logarithmic function
Log10
Logarithmic function at 10
Matmul
Matrix product
Max
A maximum value in a value collection
MIN
Minimum value in a value collection
MOD
The expensive function, the symbol is consistent with the first symbolic symbol
MODULO
The remainder, the symbol is consistent with the second variable.
Sign
Give a given value given symbol
Sin
Strine value
Sinh
Supper sinus sine
SQRT
Core root
Tan
Variable value
Tanh
Changed dual-band positive cutting value
Table 14-7 Name of characters and return values
Function name
return value
Adjustl
Move the space on the left of the string to its right
Adjustr
Move the space on the right side of the string to its left
Index
Location in a given string in a given string
Len_Trim
Delete the string length after the tail space
LGE
Comparison of greater or equal to the ASCII sequence
LGT
Comparison of larger than the ASCII sequence
LLE
Comparison of less than or equal based on ASCII sequences
LLT
Comparison of less than a sequence of ASCII sequences
Repeat
Repeat connection string
SCAN
Scan a string to get a given string where
TRIM
Delete strings obtained after the tail space
Verify
Give the character that does not belong to the specified character set inside the string
Table 14-8 Name of bit calculation function and return value
Function name
return value
Btest
Integer changed to the value of the specified bit
Iand
2 results of 2 logical AND operations
IBCLR
Take 0. the value of a designated bit of an integer changed
IBSET
Set the value on the specified bit of an integer change to 1
Ieor
The logic of two integer variable elements exclude the results of OR operations
IOR
Two integer variable elements logic contains the result of OR operations
Ishft
Logical shift
Ishftc
Logical loop displacement
NOT
Variable logic supplement
note:
● The calculation function is a class process in addition to LGE, LGT, LLE, LLT.
● Calculation function is a gradual process in addition to Dot_Product, Matmul, Repeat.
● The result of bit calculation functions is not portable.
Table 14-9 The name of the array simplification function and the return value
Function name
return value
All
If all elements of the array array are true, take true values.
Any
If there is a true value in the elements of the array array, take true values.
Count
The number of elements of the change in the elements of the elements are changed.
MaxVal
Maximum value among element elements
Minval
Minimum value in elements of the parameter array
PRODUCT
Elements of the elements of the elements
Sum
The elements of the parameter array
Table 14-10 The name of the array constructor and the return value
Function name
return value
Merge
Two suitable arrays in the control of the filter
Pack
Package a filtered array into a vector
Spread
Addition of dimensions by copying a dimension
Unpack
Restorined from one vector to a filtered array
3. Array recombinant function
The array restructuring function contains only one inquiry function RESHAPE, which is the array of elements of a rank 1 to a given shape.
4. Array Operation Function
Array Operation Functions rearrange the elements of the variable element array, and their names and return values are shown in Table 14-11. Table 14-11 Name of the array operation function and return value
Function name
return value
Cshift
Circulating shift of array elements
Eoshift
Displacement of array elements
Transpose
Matrix transposition of the parameter
5. A number of positioning functions
The array positioning function gives the maximum or minimum value in the array element in an array, or in a certain dimension of the array, and the names, and return values are shown in Table 14-12.
Table 14-12 Name of the array positioning function and the return value
Function name
return value
Maxloc
An array of rank 1 containing the largest element
Minloc
An array of rank 1 containing the minimum element
● CPU_TIME
The inherent sub-routine returns a processor time in seconds, which does not include a variable element having an INTENT attribute.
● DATE_AND_TIME
This inherent sub-routine returns the date and time information as some variable elements of the INTENT (OUT) attribute.
● MVBITS
This inherent sub-routine copies a binary code sequence from a integer data object to another integer data object.
The inherent sub-routine is the only substantial sub-routine.
● Random_Number
The inherent sub-routine returns a pseudo-random value or a pseudo-random array as the value of the change. The surface seems to be used as a function, but it actually has a post-efficiency, each of which affects the variable of the pseudo random number generator under which it is generated, so it is not a pure process. The inherent function must be a pure process.
● Random_seed
The inherent sub-routine also returns a pseudo-random value or a pseudo-random array as the value of the variable. However, it also allows specific initialization or restore the original value of the pseudo-random number generator under it.
● System_Clock
The inherent sub-routine returns the processor clock information in an integer, and there may be several formats, and can be used as a value of a variable element having an INTENT (OUT) attribute.
