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Include docs for intrinsic functions
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‎src/docs/ABORT.html‎

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<code>ABORT</code> — Abort the program
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<h3>Description</h3>
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<code>ABORT</code> causes immediate termination of the program. On operating
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systems that support a core dump, <code>ABORT</code> will produce a core dump.
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It will also print a backtrace, unless <code>-fno-backtrace</code> is given.
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<br>
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<h3>Syntax</h3>
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<code>CALL ABORT</code>
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<br>
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<h3>Return value</h3>
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Does not return.
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<br>
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<h3>Example</h3>
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<code class="smallexample" syntax="Packages/Fortran/grammars/FortranModern.sublime-syntax">
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<br>program test_abort
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<br>  integer :: i = 1, j = 2
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<br>  if (i /= j) call abort
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<br>end program test_abort</code>
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<br>
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<h3>Standard</h3>
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GNU extension
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<br>
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<h3>Class</h3>
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Subroutine
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<br>
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<h3>See also</h3>
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<a href="EXIT.html#EXIT">EXIT</a>, <a href="KILL.html#KILL">KILL</a>, <a href="BACKTRACE.html#BACKTRACE">BACKTRACE</a>
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‎src/docs/ABS.html‎

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<code>ABS</code> — Absolute value
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<h3>Description</h3>
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<code>ABS(A)</code> computes the absolute value of <code>A</code>.
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<br>
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<h3>Syntax</h3>
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<code>RESULT = ABS(A)</code>
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<br>
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<h3>Arguments</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="15%"><var>A</var> </td><td valign="top" width="70%">The type of the argument shall be an <code>INTEGER</code>,
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<code>REAL</code>, or <code>COMPLEX</code>.
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Return value</h3>
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The return value is of the same type and
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kind as the argument except the return value is <code>REAL</code> for a
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<code>COMPLEX</code> argument.
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<br>
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<h3>Example</h3>
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<code class="smallexample" syntax="Packages/Fortran/grammars/FortranModern.sublime-syntax">
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<br>program test_abs
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<br>  integer :: i = -1
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<br>  real :: x = -1.e0
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<br>  complex :: z = (-1.e0,0.e0)
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<br>  i = abs(i)
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<br>  x = abs(x)
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<br>  x = abs(z)
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<br>end program test_abs</code>
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<br>
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<h3>Specific names</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="20%">Name </td><td valign="top" width="20%">Argument </td><td valign="top" width="20%">Return type </td><td valign="top" width="25%">Standard
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>ABS(A)</code> </td><td valign="top" width="20%"><code>REAL(4) A</code> </td><td valign="top" width="20%"><code>REAL(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>CABS(A)</code> </td><td valign="top" width="20%"><code>COMPLEX(4) A</code> </td><td valign="top" width="20%"><code>REAL(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>DABS(A)</code> </td><td valign="top" width="20%"><code>REAL(8) A</code> </td><td valign="top" width="20%"><code>REAL(8)</code> </td><td valign="top" width="25%">Fortran 77 and later
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>IABS(A)</code> </td><td valign="top" width="20%"><code>INTEGER(4) A</code> </td><td valign="top" width="20%"><code>INTEGER(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>ZABS(A)</code> </td><td valign="top" width="20%"><code>COMPLEX(8) A</code> </td><td valign="top" width="20%"><code>COMPLEX(8)</code> </td><td valign="top" width="25%">GNU extension
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>CDABS(A)</code> </td><td valign="top" width="20%"><code>COMPLEX(8) A</code> </td><td valign="top" width="20%"><code>COMPLEX(8)</code> </td><td valign="top" width="25%">GNU extension
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<br></td></tr></tbody></table>
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</p>
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<h3>Standard</h3>
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Fortran 77 and later, has overloads that are GNU extensions
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<br>
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<h3>Class</h3>
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Elemental function
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<br>

‎src/docs/ACCESS.html‎

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<code>ACCESS</code> — Checks file access modes
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<h3>Description</h3>
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<code>ACCESS(NAME, MODE)</code> checks whether the file <var>NAME</var>
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exists, is readable, writable or executable. Except for the
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executable check, <code>ACCESS</code> can be replaced by
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Fortran 95's <code>INQUIRE</code>.
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<br>
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<h3>Syntax</h3>
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<code>RESULT = ACCESS(NAME, MODE)</code>
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<br>
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<h3>Arguments</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="15%"><var>NAME</var> </td><td valign="top" width="70%">Scalar <code>CHARACTER</code> of default kind with the
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file name. Tailing blank are ignored unless the character <code>achar(0)</code>
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is present, then all characters up to and excluding <code>achar(0)</code> are
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used as file name.
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<br></td></tr><tr align="left"><td valign="top" width="15%"><var>MODE</var> </td><td valign="top" width="70%">Scalar <code>CHARACTER</code> of default kind with the
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file access mode, may be any concatenation of <code>"r"</code> (readable),
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<code>"w"</code> (writable) and <code>"x"</code> (executable), or <code>" "</code> to check
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for existence.
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Return value</h3>
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Returns a scalar <code>INTEGER</code>, which is <code>0</code> if the file is
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accessible in the given mode; otherwise or if an invalid argument
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has been given for <code>MODE</code> the value <code>1</code> is returned.
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<br>
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<h3>Example</h3>
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<code class="smallexample" syntax="Packages/Fortran/grammars/FortranModern.sublime-syntax">
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<br>program access_test
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<br>  implicit none
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<br>  character(len=*), parameter :: file = 'test.dat'
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<br>  character(len=*), parameter :: file2 = 'test.dat '//achar(0)
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<br>  if(access(file,' ') == 0) print *, trim(file),' is exists'
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<br>  if(access(file,'r') == 0) print *, trim(file),' is readable'
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<br>  if(access(file,'w') == 0) print *, trim(file),' is writable'
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<br>  if(access(file,'x') == 0) print *, trim(file),' is executable'
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<br>  if(access(file2,'rwx') == 0) &amp;
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<br>    print *, trim(file2),' is readable, writable and executable'
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<br>end program access_test</code>
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<br>
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<h3>Specific names</h3>
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<h3>Standard</h3>
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GNU extension
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<br>
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<h3>Class</h3>
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Inquiry function
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<br>
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<h3>See also</h3>
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‎src/docs/ACHAR.html‎

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<code>ACHAR</code> — Character in <acronym>ASCII</acronym> collating sequence
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<h3>Description</h3>
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<code>ACHAR(I)</code> returns the character located at position <code>I</code>
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in the <acronym>ASCII</acronym> collating sequence.
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<br>
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<h3>Syntax</h3>
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<code>RESULT = ACHAR(I [, KIND])</code>
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<br>
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<h3>Arguments</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="15%"><var>I</var> </td><td valign="top" width="70%">The type shall be <code>INTEGER</code>.
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<br></td></tr><tr align="left"><td valign="top" width="15%"><var>KIND</var> </td><td valign="top" width="70%">(Optional) An <code>INTEGER</code> initialization
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expression indicating the kind parameter of the result.
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Return value</h3>
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The return value is of type <code>CHARACTER</code> with a length of one.
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If the <var>KIND</var> argument is present, the return value is of the
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specified kind and of the default kind otherwise.
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<br>
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<h3>Example</h3>
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<code class="smallexample" syntax="Packages/Fortran/grammars/FortranModern.sublime-syntax">
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<br>program test_achar
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<br>  character c
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<br>  c = achar(32)
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<br>end program test_achar</code>
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<br>
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<h3>Notes</h3>
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See <a href="ICHAR.html#ICHAR">ICHAR</a> for a discussion of converting between numerical values
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and formatted string representations.
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<br>
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<h3>Standard</h3>
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Fortran 77 and later, with <var>KIND</var> argument Fortran 2003 and later
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<br>
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<h3>Class</h3>
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Elemental function
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<br>
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<h3>See also</h3>
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<a href="CHAR.html#CHAR">CHAR</a>, <a href="IACHAR.html#IACHAR">IACHAR</a>, <a href="ICHAR.html#ICHAR">ICHAR</a>
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‎src/docs/ACOS.html‎

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<code>ACOS</code> — Arccosine function
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<h3>Description</h3>
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<code>ACOS(X)</code> computes the arccosine of <var>X</var> (inverse of <code>COS(X)</code>).
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<br>
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<h3>Syntax</h3>
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<code>RESULT = ACOS(X)</code>
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<br>
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<h3>Arguments</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="15%"><var>X</var> </td><td valign="top" width="70%">The type shall either be <code>REAL</code> with a magnitude that is
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less than or equal to one - or the type shall be <code>COMPLEX</code>.
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Return value</h3>
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The return value is of the same type and kind as <var>X</var>.
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The real part of the result is in radians and lies in the range
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0 \leq \Re \acos(x) \leq \pi.
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<br>
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<h3>Example</h3>
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<code class="smallexample" syntax="Packages/Fortran/grammars/FortranModern.sublime-syntax">
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<br>program test_acos
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<br>  real(8) :: x = 0.866_8
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<br>  x = acos(x)
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<br>end program test_acos</code>
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<br>
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<h3>Specific names</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="20%">Name </td><td valign="top" width="20%">Argument </td><td valign="top" width="20%">Return type </td><td valign="top" width="25%">Standard
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>ACOS(X)</code> </td><td valign="top" width="20%"><code>REAL(4) X</code> </td><td valign="top" width="20%"><code>REAL(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>DACOS(X)</code> </td><td valign="top" width="20%"><code>REAL(8) X</code> </td><td valign="top" width="20%"><code>REAL(8)</code> </td><td valign="top" width="25%">Fortran 77 and later
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Standard</h3>
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Fortran 77 and later, for a complex argument Fortran 2008 or later
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<br>
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<h3>Class</h3>
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Elemental function
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<br>
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<h3>See also</h3>
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Inverse function: <a href="COS.html#COS">COS</a>
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‎src/docs/ACOSH.html‎

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<code>ACOSH</code> — Inverse hyperbolic cosine function
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<h3>Description</h3>
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<code>ACOSH(X)</code> computes the inverse hyperbolic cosine of <var>X</var>.
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<br>
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<h3>Syntax</h3>
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<code>RESULT = ACOSH(X)</code>
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<br>
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<h3>Arguments</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="15%"><var>X</var> </td><td valign="top" width="70%">The type shall be <code>REAL</code> or <code>COMPLEX</code>.
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Return value</h3>
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The return value has the same type and kind as <var>X</var>. If <var>X</var> is
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complex, the imaginary part of the result is in radians and lies between
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0 \leq \Im \acosh(x) \leq \pi.
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<br>
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<h3>Example</h3>
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<code class="smallexample" syntax="Packages/Fortran/grammars/FortranModern.sublime-syntax">
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<br>PROGRAM test_acosh
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<br>  REAL(8), DIMENSION(3) :: x = (/ 1.0, 2.0, 3.0 /)
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<br>  WRITE (*,*) ACOSH(x)
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<br>END PROGRAM</code>
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<br>
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<h3>Specific names</h3>
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<p><table summary=""><tbody><tr align="left"><td valign="top" width="20%">Name </td><td valign="top" width="20%">Argument </td><td valign="top" width="20%">Return type </td><td valign="top" width="25%">Standard
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<br></td></tr><tr align="left"><td valign="top" width="20%"><code>DACOSH(X)</code> </td><td valign="top" width="20%"><code>REAL(8) X</code> </td><td valign="top" width="20%"><code>REAL(8)</code> </td><td valign="top" width="25%">GNU extension
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<br></td></tr></tbody></table>
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<br></p>
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<h3>Standard</h3>
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Fortran 2008 and later
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<br>
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<h3>Class</h3>
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Elemental function
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<br>
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<h3>See also</h3>
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Inverse function: <a href="COSH.html#COSH">COSH</a>

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