abort(III) generate an IOT fault
abs, fabs(III) absolute value
alloc, free(III) core allocator
atan, atan2(III) arc tangent function
atof(III) convert ASCII to floating
atoi(III) convert ASCII to integer
crypt(III) password encoding
ctime, ijtime(III) convert date and time to ASCII
ecvt, fcvt(III) output conversion
end, etext, edata(III) last locations in program
envsave, envrest(III) execute non-local goto
exp(III) exponential function
floor, ceil(III) floor and ceiling functions
fmod(III) floating modulo function
fptrap(III) floating point interpreter
gamma(III) log gamma function
getarg, iargc(III) get command arguments from Fortran
getc, getw, fopen(III) buffered input
getchar(III) read character
getpw(III) get name from UID
hmul(III) high-order product
ierror(III) catch Fortran errors
ldiv, lrem(III) long division
locv(III) long output conversion
log(III) natural logarithm
mktemp(III) create temporary file name
monitor(III) prepare execution profile
nargs(III) argument count
nlist(III) get entries from name list
perror, sys\*_errlist, sys\*_nerr, errno(III) system error messages
pow(III) floating exponentiation
printf(III) formatted print
prints(III) print string
putc, putw, fcreat, fflush(III) buffered output
putchar, flush(III) write character
qsort(III) quicker sort
rand, srand(III) random number generator
reset, setexit(III) execute non-local goto
setfil(III) specify Fortran file name
sin, cos(III) trigonometric functions
skill(III) send a signal to a set of processes
sqrt(III) square root function
ttyn(III) return name of current typewriter
