LSAME LOGICAL Test if two characters are the same regardless of case
SLAMCH REAL Determine machine-dependent parameters
DLAMCH DOUBLE PRECISION Determine machine-dependent parameters
SECOND REAL Return time in seconds from a fixed starting time
DSECND DOUBLE PRECISION Return time in seconds from a fixed starting time
ILAENV INTEGER Checks that NaN and infinity arithmetic are IEEE-754 compliant
If you are working only in single precision, you do not need to install DLAMCH and DSECND, and if you are working only in double precision, you do not need to install SLAMCH and SECOND.
These five subroutines are provided in LAPACK/INSTALL, along with five test programs. To compile the five test programs and run the tests, go to LAPACK and type make install. The test programs are called testlsame, testslamch, testdlamch, testsecond, testdsecnd and testieee. If you do not wish to run all tests, you will need to modify the install definition in the LAPACK/Makefile to only include the tests you wish to run. Otherwise, all tests will be performed. The expected results of each test program are described below.