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Audio Help [fawrth, fohrth] Pronunciation Key | 1. | onward or outward in place or space; forward: to come forth; go forth. |
| 2. | onward in time, in order, or in a series: from that day forth. |
| 3. | out, as from concealment or inaction; into view or consideration: The author's true point comes forth midway through the book. |
| 4. | away, as from a place or country: to journey forth. |
| 5. | Archaic. out of; forth from. |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
forth
To learn more about forth visit Britannica.com
| © 2008 Encyclopædia Britannica, Inc. |
Audio Help [fawrth, fohrth] Pronunciation Key | 1. | Firth of, an arm of the North Sea, in SE Scotland: estuary of Forth River. 48 mi. (77 km) long. |
| 2. | a river in S central Scotland, flowing E into the Firth of Forth. 116 mi. (187 km) long. |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
| forth
Audio Help (fôrth, fōrth) Pronunciation Key
adv.
prep. Archaic Out of; forth from. [Middle English, from Old English; see per1 in Indo-European roots.] |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
| Forth
Audio Help (fôrth, fōrth) Pronunciation Key
A river of south-central Scotland flowing about 187 km (116 mi) eastward to the Firth of Forth, a wide inlet of the North Sea. |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
forth
| Online Etymology Dictionary, © 2001 Douglas Harper |
| forth | |
adverb | |
| 1. | from a particular thing or place or position ('forth' is obsolete); "ran away from the lion"; "wanted to get away from there"; "sent the children away to boarding school"; "the teacher waved the children away from the dead animal"; "went off to school"; "they drove off"; "go forth and preach" [syn: away] |
| 2. | forward in time or order or degree; "from that time forth"; "from the sixth century onward" |
| 3. | out into view; "came forth from the crowd"; "put my ideas forth" |
noun | |
| 1. | a river in southern Scotland that flows eastward to the Firth of Forth |
| WordNet® 3.0, © 2006 by Princeton University. |
forth
see and so forth; back and forth; bring forth; hold forth; put forth; set forth.
| The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Company. |
forth [foːθ] adverb
Example: They went forth into the desert.
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| Kernerman English Multilingual Dictionary, © 2000-2006 K Dictionaries Ltd. |
FORTH
1.
Forth programs are structured as lists of "words" - FORTH's term which encompasses language keywords, primitives and user-defined subroutines. Forth takes the idea of subroutines to an extreme - nearly everything is a subroutine. A word is any string of characters except the separator which defaults to space. Numbers are treated specially. Words are read one at a time from the input stream and either executed immediately ("interpretive execution") or compiled as part of the definition of a new word.
The sequential nature of list execution and the implicit use of the data stack (numbers appearing in the lists are pushed to the stack as they are encountered) imply postfix syntax. Although postfix notation is initially difficult, experienced users find it simple and efficient.
Words appearing in executable lists may be "primitives" (simple assembly language operations), names of previously compiled procedures or other special words. A procedure definition is introduced by ":" and ended with ";" and is compiled as it is read.
Most Forth dialects include the source language structures BEGIN-AGAIN, BEGIN-WHILE-REPEAT, BEGIN-UNTIL, DO-LOOP, and IF-ELSE-THEN, and others can be added by the user. These are "compiling structures" which may only occur in a procedure definition.
FORTH can include in-line assembly language between "CODE" and "ENDCODE" or similar constructs. Forth primitives are written entirely in assembly language, secondaries contain a mixture. In fact code in-lining is the basis of compilation in some implementations.
Once assembled, primitives are used exactly like other words. A significant difference in behaviour can arise, however, from the fact that primitives end with a jump to "NEXT", the entry point of some code called the sequencer, whereas non-primitives end with the address of the "EXIT" primitive. The EXIT code includes the scheduler in some multi-tasking systems so a process can be descheduled after executing a non-primitive, but not after a primitive.
Forth implementations differ widely. Implementation techniques include threaded code, dedicated Forth processors, macros at various levels, or interpreters written in another language such as C. Some implementations provide real-time response, user-defined data structures, multitasking, floating-point arithmetic, and/or virtual memory.
Some Forth systems support virtual memory without specific hardware support like MMUs. However, Forth virtual memory is usually only a sort of extended data space and does not usually support executable code.
FORTH does not distinguish between operating system calls and the language. Commands relating to I/O, file systems and virtual memory are part of the same language as the words for arithmetic, memory access, loops, IF statements, and the user's application.
Many Forth systems provide user-declared "vocabularies" which allow the same word to have different meanings in different contexts. Within one vocabulary, re-defining a word causes the previous definition to be hidden from the interpreter (and therefore the compiler), but not from previous definitions.
FORTH was first used to guide the telescope at NRAO, Kitt Peak. Moore considered it to be a fourth-generation language but his operating system wouldn't let him use six letters in a program name, so FOURTH became FORTH.
Versions include fig-FORTH, FORTH 79 and FORTH 83.
FAQs. ANS Forth standard, dpANS6.
FORTH Interest Group, Box 1105, San Carlos CA 94070.
See also 51forth, F68K, cforth, E-Forth, FORML, TILE Forth.
[Leo Brodie, "Starting Forth"].
[Leo Brodie, "Thinking Forth"].
[Jack Woehr, "Forth, the New Model"].
[R.G. Loeliger, "Threaded Interpretive Languages"].
2. FOundation for Research and Technology - Hellas.
(1997-04-16)
| The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe |
Forth
Af*ford"\ ([a^]f*f[=o]rd"), v. t. [imp. & p. p. Afforded; p. pr. & vb. n. Affording.] [OE. aforthen, AS. gefor[eth]ian, for[eth]ian, to further, accomplish, afford, fr. for[eth] forth, forward. The prefix ge- has no well defined sense. See Forth.]1. To give forth; to supply, yield, or produce as the natural result, fruit, or issue; as, grapes afford wine; olives afford oil; the earth affords fruit; the sea affords an abundant supply of fish. 2. To give, grant, or confer, with a remoter reference to its being the natural result; to provide; to furnish; as, a good life affords consolation in old age. His tuneful Muse affords the sweetest numbers. --Addison. The quiet lanes . . . afford calmer retreats. --Gilpin. 3. To offer, provide, or supply, as in selling, granting, expending, with profit, or without loss or too great injury; as, A affords his goods cheaper than B; a man can afford a sum yearly in charity. 4. To incur, stand, or bear without serious detriment, as an act which might under other circumstances be injurious; -- with an auxiliary, as can, could, might, etc.; to be able or rich enough. The merchant can afford to trade for smaller profits. --Hamilton. He could afford to suffer With those whom he saw suffer. --Wordsworth.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
Forth
For\, prep. [AS. for, fore; akin to OS. for, fora, furi, D. voor, OHG. fora, G. vor, OHG. furi, G. f["u]r, Icel. fyrir, Sw. f["o]r, Dan. for, adv. f["o]r, Goth. fa['u]r, fa['u]ra, L. pro, Gr. ?, Skr. pra-. [root] 202. Cf. Fore, First, Foremost, Forth, Pro-.] In the most general sense, indicating that in consideration of, in view of, or with reference to, which anything is done or takes place. 1. Indicating the antecedent cause or occasion of an action; the motive or inducement accompanying and prompting to an act or state; the reason of anything; that on account of which a thing is or is done. With fiery eyes sparkling for very wrath. --Shak. How to choose dogs for scent or speed. --Waller. Now, for so many glorious actions done, For peace at home, and for the public wealth, I mean to crown a bowl for C[ae]sar's health. --Dryden. That which we, for our unworthiness, are afraid to crave, our prayer is, that God, for the worthiness of his Son, would, notwithstanding, vouchsafe to grant. --Hooker. 2. Indicating the remoter and indirect object of an act; the end or final cause with reference to which anything is, acts, serves, or is done. The oak for nothing ill, The osier good for twigs, the poplar for the mill. --Spenser. It was young counsel for the persons, and violent counsel for the matters. --Bacon. Shall I think the worls was made for one, And men are born for kings, as beasts for men, Not for protection, but to be devoured? --Dryden. For he writes not for money, nor for praise. --Denham. 3. Indicating that in favor of which, or in promoting which, anything is, or is done; hence, in behalf of; in favor of; on the side of; -- opposed to against. We can do nothing against the truth, but for the truth. --2 Cor. xiii. 8. It is for the general good of human society, and consequently of particular persons, to be true and just; and it is for men's health to be temperate. --Tillotson. Aristotle is for poetical justice. --Dennis. 4. Indicating that toward which the action of anything is directed, or the point toward which motion is made; ?ntending to go to. We sailed from Peru for China and Japan. --Bacon. 5. Indicating that on place of or instead of which anything acts or serves, or that to which a substitute, an equivalent, a compensation, or the like, is offered or made; instead of, or place of. And if any mischief follow, then thou shalt give life for life, eye for eye, tooth for tooth, hand for hand, foot for foot. --Ex. xxi. 23, 24. 6. Indicating that in the character of or as being which anything is regarded or treated; to be, or as being. We take a falling meteor for a star. --Cowley. If a man can be fully assured of anything for a truth, without having examined, what is there that he may not embrace for tru?? --Locke. Most of our ingenious young men take up some cried-up English poet for their model. --Dryden. But let her go for an ungrateful woman. --Philips. 7. Indicating that instead of which something else controls in the performing of an action, or that in spite of which anything is done, occurs, or is; hence, equivalent to notwithstanding, in spite of; -- generally followed by all, aught, anything, etc. The writer will do what she please for all me. --Spectator. God's desertion shall, for aught he knows, the next minute supervene. --Dr. H. More. For anything that legally appears to the contrary, it may be a contrivance to fright us. --Swift. 8. Indicating the space or time through which an action or state extends; hence, during; in or through the space or time of. For many miles about There 's scarce a bush. --Shak. Since, hired for life, thy servile muse sing. --prior. To guide the sun's bright chariot for a day. --Garth. 9. Indicating that in prevention of which, or through fear of which, anything is done. [Obs.] We 'll have a bib, for spoiling of thy doublet. --Beau. & Fl. For, or As for, so far as concerns; as regards; with reference to; -- used parenthetically or independently. See under As. As for me and my house, we will serve the Lord. --Josh. xxiv. 15. For me, my stormy voyage at an end, I to the port of death securely tend. --Dryden. For all that, notwithstanding; in spite of. For all the world, wholly; exactly. "Whose posy was, for all the world, like cutlers' poetry." --Shak. For as much as, or Forasmuch as, in consideration that; seeing that; since. For by. See Forby, adv. For ever, eternally; at all times. See Forever. For me, or For all me, as far as regards me. For my life, or For the life of me, if my life depended on it. [Colloq.] --T. Hook. For that, For the reason that, because; since. [Obs.] "For that I love your daughter." --Shak. For thy, or Forthy [AS. for??.], for this; on this account. [Obs.] "Thomalin, have no care for thy." --Spenser. For to, as sign of infinitive, in order to; to the end of. [Obs., except as sometimes heard in illiterate speech.] -- "What went ye out for to see?" --Luke vii. 25. See To, prep., 4. O for, would that I had; may there be granted; -- elliptically expressing desire or prayer. "O for a muse of fire." --Shak. Were it not for, or If it were not for, leaving out of account; but for the presence or action of. "Moral consideration can no way move the sensible appetite, were it not for the will." --Sir M. Hale.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
Forth
Forth\, v.[AS. for[eth], fr. for akin to D. voort, G. fort [root]78. See Fore, For, and cf. Afford, Further, adv.]1. Forward; onward in time, place, or order; in advance from a given point; on to end; as, from that day forth; one, two, three, and so forth. Lucas was Paul's companion, at the leastway from the sixteenth of the Acts forth. --Tyndale. From this time forth, I never will speak word. --Shak. I repeated the Ave Maria; the inquisitor bad me say forth; I said I was taught no more. --Strype. 2. Out, as from a state of concealment, retirement, confinement, nondevelopment, or the like; out into notice or view; as, the plants in spring put forth leaves. When winter past, and summer scarce begun, Invites them forth to labor in the sun. --Dryden. 3. Beyond a (certain) boundary; away; abroad; out. I have no mind of feasting forth to-night. --Shak. 4. Throughly; from beginning to end. [Obs.] --Shak. And so forth, Back and forth, From forth. See under And, Back, and From. Forth of, Forth from, out of. [Obs.] --Shak. To bring forth. See under Bring.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
FORTH
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