added a call to "newfile" in uninclude

changed relative line number and address information to be
two bytes wide rather than one

add BPT pseudo-opcode

add runtime checking routines for sin, cos, atan, and exp

add underflow checking, and intelligent SIGFPE errors if opt('t')

convert ECASE to call on CASERNG

convert ECASE to call on CASERNG

added savenl.c and -I<pdxdir> in CFLAGS

new for pi to dump symbolic information for pdx

merge pdx into the Pascal system

fix npx_header to be px_header

merge pdx into the Pascal system

date and time created 82/01/18 16:43:41 by linton

be more paranoid about errors from recursive calls to rvalue().

make labels look different from function names.

RSGN4 becomes RSNG4 to avoid undefined symbol when loading.

align temporaries

align temporaries

align temporaries

put long operands into sub-opcodes for FOR, RANG, SUCC, and PRED

rmdel -r1.16

replace evening of all variables with selective alignments as needed

perform constant subscript calculations at compile time

copy formal descriptor to a local (so it's addressable) for FRTN.

put display save area back into formal routine structure