XL Fortran Enterprise Edition for AIX : User's Guide - IBM

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-qonetrip Option Syntax -qonetrip | -qnoonetrip ONETRIP | NOONETRIP This is the long form of the “-1 Option” on page 92. 208 XL Fortran Enterprise Edition for AIX : User’s Guide
-qoptimize Option Syntax -qOPTimize[=level] | -qNOOPTimize OPTimize[(level)] | NOOPTimize This is the long form of the “-O Option” on page 114. XL Fortran Compiler-Option Reference 209
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XL Fortran Enterprise Edition for A
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Note! Before using this information
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Options That Control Listings and M
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How XLF I/O Interacts with Pipes, S
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viii XL Fortran Enterprise Edition
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x XL Fortran Enterprise Edition for
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The following performance-related d
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How to Read the Syntax Diagrams and
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v Optionally, enter the value of at
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6 XL Fortran Enterprise Edition for
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Migration Support The XL Fortran co
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These items are located, or accesse
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v /usr/share/man/info/en_US/xlf/pos
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Notes: 1. Specifying the LC_ALL env
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3. Installing a compiler program te
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fsuffix cppsuffix osuffix ssuffix l
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mcrt = /lib/mcrt0_r.o gcrt = /lib/g
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options include -L/usr/lpp/xlf/lib,
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Related Information: You can use th
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Table 1. Potential Problems Migrati
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Table 1. Potential Problems Migrati
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►► xlf90 xlf90_r xlf90_r7 xlf95
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xlf90, xlf90_r, and xlf90_r7 comman
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Related Information: The ssuffix at
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Related Information: See “-qpdf O
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The @PROCESS compiler directive mus
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Passing Fortran Files through the C
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the trigraph sequence. XL Fortran u
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The configuration file /etc/xlf.cfg
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esulting program work as you expect
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v v Do not use names that are the s
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v v Build the application by using
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If you have applications in which F
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total_usertime Returns the total us
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To obtain support for items that ar
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Note: You may need the old setting
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These partitions are then assigned
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During the busy-wait search for wor
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(for example, loops for which you s
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Other Environment Variables That Af
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Options That Control Input to the C
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Table 3. Options That Control Input
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Table 5. Options for Performance Op
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Table 5. Options for Performance Op
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Table 6. Options for Debugging and
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Table 7. Options That Control Listi
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Table 8. Options for Compatibility
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v v Determine names and options for
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Detailed Descriptions of the XL For
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-1 Option Syntax -1 ONETRIP | NOONE
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-b64 Option Syntax -b64 The AIX ope
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Examples xlf95 f.f -brtl -bshared -
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-bloadmap Option Syntax -bloadmap:n
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-brtl Option Syntax -brtl | -bnortl
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-bstatic Option Related Information
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-c Option Syntax -c Prevents the co
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-d Option Syntax -d Causes preproce
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-g Option Syntax -g DBG | NODBG Gen
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-k Option Syntax -k FREE(F90) Speci
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-l Option Syntax -lkey Searches the
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-O Option Syntax -O[level] OPTimize
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-o Option Syntax -o name Specifies
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-p Option Syntax -p[g] Sets up the
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-q32 Option Related Information See
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-qalias Option Syntax -qalias={[no]
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equivalence (a, b(3)) t = b; a = t
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a derived type are stored with suff
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pwr2s p2sc You can run the executab
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v v If your primary concern is exec
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-qassert Option Syntax -qassert={de
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-qautodbl Option Syntax -qautodbl=s
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Related Information For background
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2 Level-2 cache or the table lookas
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-qcheck Option Syntax -qcheck | -qn
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-qcompact Option Syntax -qcompact |
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-qctyplss Option Syntax -qctyplss[(
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-qdbg Option Syntax -qdbg | -qnodbg
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-qdirective Option Syntax -qdirecti
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-qdirectstorage Option Syntax -qdir
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-qdpc Option Syntax -qdpc[=e] | -qn
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-qescape Option Syntax -qescape | -
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-qextchk Option Syntax -qextchk | -
Page 172 and 173: -qextname Option Syntax -qextname[=
Page 174 and 175: -qfdpr Option Syntax -qfdpr | -qnof
Page 176 and 177: -qflag Option Syntax -qflag=listing
Page 178 and 179: the reciprocal of the divisor. It a
Page 180 and 181: export SQRT_EXCEPTION=3.1 166 XL Fo
Page 182 and 183: -qfree Option Syntax -qfree[={f90|i
Page 184 and 185: -qhalt Option Syntax -qhalt=severit
Page 186 and 187: If you specify -qhot=novector, the
Page 188 and 189: -qhssngl Option Syntax -qhssngl | -
Page 190 and 191: -qinit Option Syntax -qinit=f90ptr
Page 192 and 193: v You can specify alphabetic digits
Page 194 and 195: -qintsize Option Syntax -qintsize=b
Page 196 and 197: -qipa Option Syntax -qipa[=suboptio
Page 198 and 199: If you specify short, the Object Fi
Page 200 and 201: Table 15. Regular expression syntax
Page 202 and 203: -qkeepparm Option Syntax -qkeepparm
Page 204 and 205: Restrictions The -qflag option can
Page 206 and 207: -qlibansi Option Related Informatio
Page 208 and 209: -qlibposix Option Related Informati
Page 210 and 211: -qlistopt Option Syntax -qlistopt |
Page 212 and 213: -qlog4 Option Syntax -qlog4 | -qnol
Page 214 and 215: Restrictions Depending on the sourc
Page 216 and 217: -qmixed Option Syntax -qmixed | -qn
Page 218 and 219: -qmodule Option Syntax -qmodule=man
Page 220 and 221: -qnullterm Option Syntax -qnullterm
Page 224 and 225: -qpdf Option Syntax -qpdf{1|2} Tune
Page 226 and 227: mergepdf Generates a single pdf rec
Page 228 and 229: -qphsinfo Option Syntax -qphsinfo |
Page 230 and 231: -qpic Option Syntax -qpic[=suboptio
Page 232 and 233: sce | nosce } else if (a == 3) *res
Page 234 and 235: -qprefetch Option Syntax -qprefetch
Page 236 and 237: -qrealsize Option Syntax -qrealsize
Page 238 and 239: -qrecur Option Syntax -qrecur | -qn
Page 240 and 241: To produce a listing file that you
Page 242 and 243: -qsave Option Syntax -qsave[={all|d
Page 244 and 245: -qsclk Option Syntax -qsclk[=centi
Page 246 and 247: -qsigtrap Option Syntax -qsigtrap[=
Page 248 and 249: -qsmp Option Syntax -qsmp[=suboptio
Page 250 and 251: threshold=n The work in a partition
Page 252 and 253: xlf90 -qsmp=noopt -O3... is equival
Page 254 and 255: -qspillsize Option Syntax -qspillsi
Page 256 and 257: -qstrictieeemod Option Syntax -qstr
Page 258 and 259: -qsuffix Option Syntax -qsuffix=opt
Page 260 and 261: Examples @process nullterm i = 1; j
Page 262 and 263: Related Information See the OpenMP
Page 264 and 265: -qthreaded Option Syntax -qthreaded
Page 266 and 267: If you do not specify -qtune, its s
Page 268 and 269: -qundef Option Syntax -qundef | -qn
Page 270 and 271: -qunwind Option Syntax -qunwind |-q
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-qwarn64 Option See “-qwarn64 Opt
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-qxflag=xalias Option Syntax -qxfla
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intxor | nointxor Treats .XOR. as a
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Examples Consider the following pro
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In this example, conditional compil
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-qzerosize Option Syntax -qzerosize
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-t Option Syntax -tcomponents Appli
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-u Option Syntax -u UNDEF | NOUNDEF
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-V Option Syntax -V This option is
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$ ./a.out 1 2 3 4 276 XL Fortran En
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-y Option Syntax -y{n | m | p | z}
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64-Bit Thread Support On AIX Versio
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-q64 Option Syntax -q64[=largetype]
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-qwarn64 Option Syntax -qwarn64 | -
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286 XL Fortran Enterprise Edition f
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v v If the data or program code con
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v Comparisons involving NaN values
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How XL Fortran Rounds Floating-Poin
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2. For thread-safety and reentrancy
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v The fltint suboption speeds up fl
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There are other related operating s
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Another method is to use the ieee_s
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call fpgets(fpstat) fpstat(fpox) =
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The following example shows the dif
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v Code that might cause an exceptio
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Optimization levels Option -qnoopt/
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v -qcache=auto Optimization level -
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v v v Reducing the costs of memory
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Loop unrolling also increases code
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2. Run the application using a typi
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# Let the compiler decide (relative
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can also use the SNAPSHOT directive
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-qipa=list cross-file type checking
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Stream-access formatted files: A re
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I/O Redirection The important thing
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Default Record Lengths File Permiss
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XLFRTEOPTS="unit_vars=yes" # Allow
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Logical Volume I/O To use a logical
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READ(unit_number,ID=idvar) a .... W
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450 end do close(20) end Performanc
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Table 22. Table for Binding an Appl
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v The result of an application does
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Sometimes an application can guaran
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v v The XL compilers generate code
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#include template class junk { pri
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Notes: 1. In interlanguage communic
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Table 25. Escape Sequences for Char
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You can use this built-in function
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The system linkage convention passe
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Run-time Stack for 32-bit Environme
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processing, and the fifth doublewor
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v v v v v v v In a 32-bit Environme
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Will Be Passed In: R3 0 Storage Map
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Function Values Functions return th
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Example The control structure has t
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technique can reduce the amount of
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Note: When you run an XL Fortran pr
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Duplicating Extensions from Other S
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Input/Output Errors If the error de
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-> xlf95 -qddim -g testprog.f -o te
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7. The next step is to research why
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Note that you cannot use the -qextn
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v v Memory leak reporting that indi
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HD_FILL HD_STACK=n called a certain
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Source Section The source section c
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Attribute and Cross-Reference Secti
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Automating Large, Complex Compilati
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For fixed source form code, in addi
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Common Industry Extensions That XL
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Example 2 - Valid C Routine Source
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close(10) open(10, file="fun10.out"
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!**********************************
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operating system require the same o
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Examples of Storage Relationships f
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0 4 8 16 32 64 COMPLEX (16) COMPLEX
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! Data values between r8 and x16 ar
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end function sqrt real*8 function r
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Table 34. MASS Vector Library Funct
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IBM may use or distribute any of th
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ind. To relate an identifier to ano
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expression. A sequence of operands,
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name. A lexical token consisting of
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labels can be used to transfer cont
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.profile file 12 .s files 33, 34 .X
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fdate_ service and utility subprogr
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nonested_par suboption of -qsmp 234
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vi text editor 29 W W error severit
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