/* <<< INITIAL VALUE EXTENSION INCLUDE FILE >>> */ /* <<< LAST MODIFIED ON 08-16-74 >>> */ /* An initial value extension is included in a type 9 data name token when the description of the data name includes a value clause. An initial value extension is also included in a type 11 condition name token for each value specified for the condition name. An initial value extension has one of two formats, depending on the class of the literal specified as a value. The first seven bits of each of the two formats have the same meaning, and identify the format. */ /* The Numeric Initial Value Structure */ /* ***STRUCTURE SIZE INFORMATION*** */ /* THE SIZE OF THIS STRUCTURE IN BYTES, (EXCLUDING VARIABLE LENGTH ENTITIES), FOR EACH HARDWARE IMPLEMENTATION IS: HARDWARE | SIZE (BYTES) --------------------------------- 6180 | 20 P7 | 12 --------------------------------- */ dcl num_init_ptr ptr; dcl 1 num_init based (num_init_ptr), 2 numeric bit (1), 2 non_numeric bit (1), 2 fig_con bit (1), 2 all_lit bit (1), 2 single bit (1), 2 thru1 bit (1), 2 thru2 bit (1), 2 filler1 bit (1), 2 integral bit (1), 2 floating bit (1), 2 filler2 bit (6), 2 sign char (1), 2 exp_sign char (1), 2 exp_places fixed bin (15), 2 places_left fixed bin (15), 2 places_right fixed bin (15), 2 places fixed bin (15), 2 literal char (30); /* FIELD CONTENTS numeric "1"b non_numeric "0"b fig_con Set to "1"b when this literal is a figurative constant. If the literal is of the form ALL literal, this field is set to "1"b only when the literal following ALL is itself a figurative constant. all_lit Set to "1"b when this literal is a figurative constant of the form ALL literal. single Set to "1"b when this literal is a value of a condition name but is not part of a thru phrase. thru1 Set to "1"b when this is the first literal in a thru phrase. thru2 Set to "1"b when this is the second literal in a thru phrase. filler1 Available for future use. integral Set to "1"b when this literal is an integer. floating Set to "1"b when this is a floating-point literal. Set to "0"b when this is a fixed-point literal. filler2 Available for future use. sign The sign of the fixed-point part (as opposed to the exponent) of the literal. The possible values of this field are "+", "-", and a space. exp_sign The sign of the exponent of the literal. The possible values of this field are "+", "-", and a space. This field is significant only when floating is "1"b. exp_places The number of digits in the exponent of the literal. places_left The number of digits to the left of the decimal point in the fixed-point part of the literal. places_right The number of digits to the right of the decimal point in the fixed-point part of the literal. places The number of digits in the literal, including the exponent. literal The digits of the literal. */ /* The Alphanumeric Initial Value Structure */ /* ***STRUCTURE SIZE INFORMATION*** */ /* THE SIZE OF THIS STRUCTURE IN BYTES, (EXCLUDING VARIABLE LENGTH ENTITIES), FOR EACH HARDWARE IMPLEMENTATION IS: HARDWARE | SIZE (BYTES) --------------------------------- 6180 | 8 P7 | 4 --------------------------------- */ dcl alp_init_ptr ptr; dcl 1 alpha_init based (alp_init_ptr), 2 numeric bit (1), 2 non_numeric bit (1), 2 fig_con bit (1), 2 all_lit bit (1), 2 single bit (1), 2 thru1 bit (1), 2 thru2 bit (1), 2 filler1 bit (1), 2 bit_string bit (1), 2 fig_con_index bit (7), 2 lit_size fixed bin (15), 2 string char (770); /* FIELD CONTENTS numeric "0"b non_numeric "1"b fig_con Set to "1"b when this literal is a figurative constant. all_lit Set to "1"b when this literal is a figurative constant of the form ALL literal. single Set to "1"b when this literal is a value of a condition name but is not part of a thru phrase. thru1 Set to "1"b when this is the first literal in a thru phrase. thru2 Set to "1"b when this is the second literal in a thru phrase. filler1 Available for future use. bit_string Set to "1"b when this is a boolean literal. fig_con_index A binary value identifying this figurative constant. This field is significant only when fig_con is "1"b. 1 = zero, zeros, zeroes 2 = space, spaces 3 = upper-bound, upper-bounds 4 = lower-bound, lower-bounds 5 = high-value, high-values 6 = low-value, low-values 7 = quote, quotes lit_size The number of characters in the literal, excluding delimiting quotation marks. string The literal character-string. */ /* <<< END OF INITIAL VALUE EXTENSION INCLUDE FILE >>> */ */ ----------------------------------------------------------- Historical Background This edition of the Multics software materials and documentation is provided and donated to Massachusetts Institute of Technology by Group Bull including Bull HN Information Systems Inc. as a contribution to computer science knowledge. This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology, Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell Bull Inc., Groupe Bull and Bull HN Information Systems Inc. to the development of this operating system. Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970), renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture for managing computer hardware properly and for executing programs. Many subsequent operating systems incorporated Multics principles. Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. . ----------------------------------------------------------- Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without fee is hereby granted,provided that the below copyright notice and historical background appear in all copies and that both the copyright notice and historical background and this permission notice appear in supporting documentation, and that the names of MIT, HIS, Bull or Bull HN not be used in advertising or publicity pertaining to distribution of the programs without specific prior written permission. Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc. Copyright 2006 by Bull HN Information Systems Inc. Copyright 2006 by Bull SAS All Rights Reserved */