XLF_INTRINSICS
Examples of IBM XLF Intrinsic Functions

XLF_INTRINSICS is a FORTRAN90 program which demonstrates the use and features of some of the intrinsic routines peculiar to the IBM XLF FORTRAN compiler.

These functions are not listed in the FORTRAN standard; they are in some cases commonly available in C or C++ compilers.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

XLF_INTRINSICS is available in a FORTRAN90 version.

Related Data and Programs:

C_INTRINSICS, a C program which illustrates the use of intrinsic functions supplied by the C language.

CPP_INTRINSICS, a C++ program which illustrates the use of intrinsic functions supplied by the C++ language.

F77_INTRINSICS, a FORTRAN77 program which illustrates the use of intrinsic functions supplied by the FORTRAN77 language.

F90_INTRINSICS, a FORTRAN90 program which illustrates the use of intrinsic functions supplied by the FORTRAN77 language.

G++_INTRINSICS, C++ programs which demonstrates some of the intrinsic functions provided by the G++ compiler.

G77_INTRINSICS, FORTRAN77 programs which includes some examples of the use of intrinsic functions included with the GNU G77 compiler.

G95_INTRINSICS, FORTRAN90 programs which includes some examples of the use of intrinsic functions included with the GNU G95 FORTRAN compiler.

GCC_INTRINSICS, C programs which tests or demonstrates intrinsic routines provided by the GCC compiler.

GFORTRAN_INTRINSICS, FORTRAN90 programs which demonstrates the use of some of the intrinsic functions included with the GFORTRAN compiler.

MATH_INTRINSICS, a JAVA program which illustrates the use of the intrinsic functions in the Java Math package.

Reference:

1. XL Fortran for AIX,
   Language Reference,
   Version 11, Release 1,
   IBM.

Examples and Tests:

• xlf_intrinsics.f90, a single program that calls many tests; eact test is devoted to a particular XLF intrinsic function.
• xlf_intrinsics.sh, commands that compile and run the test;
• xlf_intrinsics.txt, the output file;

List of Routines:

• TEST_ERF checks ERF against ERF_VALUES.
• TEST_ERFC checks ERFC against ERFC_VALUES.
• TEST_ETIME_ tests ETIME_.
• TEST_FDATE_ tests FDATE_.
• TEST_GAMMA checks GAMMA against GAMMA_VALUES.
• TEST_HOSTNM_ tests HOSTNM_.
• TEST_LGAMMA tests LGAMMA..
• TEST_RAND tests RAND.
• TEST_SIZEOF tests SIZEOF.
• TEST_SLEEP_ tests SLEEP_.
• TEST_SYSTEM tests SYSTEM.
• TEST_TIME_ tests TIME_.
• TEST_TIMEF tests TIMEF.
• ERF_VALUES returns some values of the ERF or "error" function.
• ERFC_VALUES returns some values of the ERFC or "complementary error" function.
• GAMMA_VALUES returns some values of the GAMMA function.
• GAMMA_LOG_VALUES returns some values of the log(GAMMA) function.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the FORTRAN90 source codes.