rp (1) --- extended Ratfor preprocessor 08/27/84 | _U_s_a_g_e rp [-{a | b | c | d | f | g | h | l | m | p | s | t | v | y}] [-o ] {} [-x ] _D_e_s_c_r_i_p_t_i_o_n 'Rp' is the Georgia Tech extended Ratfor preprocessor. It replaces the original Kernighan/Plauger Ratfor preprocessor, locally supported under the name 'rf' at Version 7. A full description of the Ratfor language is quite beyond the scope of this document. For complete information, | please see the _U_s_e_r_'_s _G_u_i_d_e _f_o_r _t_h_e _R_a_t_f_o_r _P_r_e_p_r_o_c_e_s_s_o_r The following options are available: | -a Abort all active shell programs if any errors were | encountered during preprocessing. This option is useful in shell programs like 'rfl' that wish to inhibit compilation and loading if preprocessing failed. By default, this option is not selected; that is, errors in preprocessing do not terminate active shell programs. | -b Do not map long identifiers or identifiers | containing upper case letters into unique six character Fortran identifiers. This option is useful if your Fortran compiler will accept names longer than six characters. | -c Include statement-count profiling code in the | generated Fortran. When this option is selected, calls to the library routines 'c$init', 'c$incr', and 'c$end' will be placed (unobtrusively) in the output code. When the preprocessed program is run, it will generate a file named "_st_count" containing execution frequencies for each line of source code. The utility program 'st_profile' may then be used to combine source code and statement counts to form a readable report. | -d Inhibit generation of the long-name dictionary. Normally, a dictionary listing all long names used in the Ratfor program along with their equivalent short forms is placed at the end of the generated Fortran as a series of comment statements. This option prevents its generation. | -f Suppress automatic inclusion of standard | definitions file. Macro definitions for the manifest constants used throughout the Subsystem reside in the file "=incl=/swt_def.r.i". 'Rp' will process these definitions automatically, unless the "-f" option is specified. rp (1) - 1 - rp (1) rp (1) --- extended Ratfor preprocessor 08/27/84 | -g Make a second pass over the code and remove GOTOs | to GOTOs generated in Ratfor control structures. Use of this option lengthens preprocessing time significantly, but can result (sometimes) in a 2-5% speedup of the object program. | -h Produce Hollerith-format string constants rather | than quoted string constants. This option useful in producing character strings in the proper format needed by your Fortran compiler. | -l Include Ratfor line numbers in the sequence number | field of the Fortran output. This may be useful in tracking down the Ratfor statement that caused a Fortran syntax error. By default, no sequence field is generated. | -m Map all identifiers to lower case. When this option is selected, 'rp' considers the upper case letters equivalent to the corresponding lower case letters, except inside quoted strings. | -p Emit subroutine profiling code. When this option is selected, 'rp' places calls to the library routines 't$entr', 't$exit', and 't$clup' in the Fortran output, and creates a text file named "timer_dictionary" containing the names of all subprograms seen by the preprocessor. When the profiled program is run, a file named "_profile" is created that contains timing measurements for each subprogram. The utility program 'profile' may then be used to print a report summarizing the number of times each subprogram was called and the total time spent in each. | -s Short-circuit all logical conditions. The order of evaluation of logical operands in Fortran is unspecified; that is, in the expression "a&b" there is no guarantee that "a" will be evaluated before "b". Occasionally this creates incon- veniences; one would like to say something like "if(i>1&array(i)~=0)...". 'Rp' supplies the short-circuit logical operators "&&" and "||" (read "andif" and "orif") for these occasions. Both operators evaluate their left operands; if the value of the logical expression is predictable solely on the basis of the value of the left operand, then the right operand remains unevaluated and the correct expression value is yielded. Otherwise the right operand is evaluated and the proper expression value is determined. The "-s" option may be used to automatically con- vert all "logical and" operators in a program to "andifs," and all "logical or" operators to "orifs." In addition to improving program portability, this option may also reduce execution rp (1) - 2 - rp (1) rp (1) --- extended Ratfor preprocessor 08/27/84 time. By default, however, this option is not in effect. | -t Trace subprograms. When a program preprocessed with the "-t" option is run, an indented trace of the subprograms encountered will be printed on ERROUT. This trace output is generated by calls to the library routine 't$trac' that are inserted automatically by 'rp'. | -v Output "standard" Fortran. This option causes | 'rp' to generate only standard Fortran constructs (as far as we know). This option does not detect non-standard Fortran usage in Ratfor source code; it only prevents 'rp' from generating non-standard constructs in implementing its data and control structures. Programs preprocessed with this option are slightly larger and slower; the intermediate Fortran and binary files are approximately 10% larger. | -x Translate character codes. 'Rp' uses the charac- | ter correspondences in the to convert characters into integers when it builds Fortran DATA statements containing EOS-terminated or PL/I strings. If the option is not specified, 'rp' converts the characters using the native Prime character set. The format of the transla- tion file is documented below. | -y Do not output "call swt". This option keeps 'rp' from generating "call swt" in place of all "stop" statements. The remainder of the command line is used to specify the names of the Ratfor input file(s) and the Fortran output file. If the "-o" option, followed by a filename, is selec- ted, then the named file is used for Fortran output. Any remaining filenames are considered Ratfor source files. If no other file names are specified, standard input is read. If the "-o" option is not specified, then the output filename is constructed from the first input filename by changing a ".r" suffix (if present) to ".f". If the ".r" suffix is not present, the output filename is the input filename followed by the suffix ".f". The format of the translation file used with the "-x" option is as follows. Each line contains descriptions of two characters: the Prime native character to be replaced, and the character value to replace it. These descriptions may be any one of the following: a single non-blank Prime ASCII character, a number in a format acceptable to 'gctoi' (must be more than one digit), or an ASCII mnemonic acceptable to 'mntoc'. In addition, the character to be replaced may also be the mnemonic "EOS" to indicate that the value of the end- of-string indicator is to be changed. For example, here is rp (1) - 3 - rp (1) rp (1) --- extended Ratfor preprocessor 08/27/84 a portion of the table for converting the EBCDIC character set: A 16rc1 B 16rc2 ... Z 16re9 0 16rf0 ... 9 16rf9 SP 16r40 _E_x_a_m_p_l_e_s rp file.r rp -scp slow_prog.r rp -o all.f part1.r part2.r part3.r cat [files .r] | rp >junk.f _F_i_l_e_s =temp=/tm?* for various internal temporaries =incl=/swt_def.r.i for standard Subsystem macro definitions _M_e_s_s_a_g_e_s | See the _U_s_e_r_'_s _G_u_i_d_e _f_o_r _t_h_e _R_a_t_f_o_r _P_r_e_p_r_o_c_e_s_s_o_r _S_e_e _A_l_s_o profile (1), st_profile (1), c$init (6), c$incr (6), c$end (6), t$entr (6), t$exit (6), t$clup (6), t$time (6), t$trac | (6), _S_o_f_t_w_a_r_e _T_o_o_l_s, _S_o_f_t_w_a_r_e _T_o_o_l_s _S_u_b_s_y_s_t_e_m _T_u_t_o_r_i_a_l, | _U_s_e_r_'_s _G_u_i_d_e _f_o_r _t_h_e _R_a_t_f_o_r _P_r_e_p_r_o_c_e_s_s_o_r rp (1) - 4 - rp (1)