Forth by W. P. SALMAN, O. Tisserand, B. Toulout

By W. P. SALMAN, O. Tisserand, B. Toulout

Show description

Read or Download Forth PDF

Similar compilers books

Constraint Databases

This e-book is the 1st complete survey of the sphere of constraint databases. Constraint databases are a pretty new and energetic region of database study. the foremost proposal is that constraints, comparable to linear or polynomial equations, are used to symbolize huge, or perhaps countless, units in a compact approach.

Principles of Program Analysis

Application research makes use of static concepts for computing trustworthy information regarding the dynamic habit of courses. functions contain compilers (for code improvement), software program validation (for detecting error) and variations among facts illustration (for fixing difficulties similar to Y2K). This e-book is exclusive in offering an outline of the 4 significant methods to software research: info move research, constraint-based research, summary interpretation, and sort and impression platforms.

R for Cloud Computing: An Approach for Data Scientists

R for Cloud Computing appears at the various initiatives played through company analysts at the computer (PC period) and is helping the consumer navigate the wealth of data in R and its 4000 applications in addition to transition an identical analytics utilizing the cloud. With this knowledge the reader can pick out either cloud owners and the occasionally complicated cloud atmosphere in addition to the R programs which could aid technique the analytical initiatives with minimal attempt, price and greatest usefulness and customization.

Extra info for Forth

Sample text

All values are signed M* M* ( n1 n2 --- d ) Multiplies two 16-bit numbers and gives a 32-bit number result b ) d1 d2 --- b ( d --- ) d n --- d Compares two 32-bit numbers. Returns true if d1D S->D ( n --- d ) Converts a l6-bit number to a 32bit number U. U. Displays a single-length unsigned number U* U* ( ul u2 --- ud ) Multiplies two unsigned singlelength numbers and returns a signed double-length number U/MOD U/MOD ( ud ul --u2 u3 ) Divides an unsigned 32-bit number by an unsigned l6-bit number.

PLAY CR BEGIN 32 WORD HERE 1+ C@ WHILE HERE COUNT TYPE CR REPEAT OK PLAY AT HOME AT HOME OK (Transfers word to end of dictionary) (Value of first character) (Test for end) (Prepares parameters for TYPE) (Prints word) The interpreter detects and executes the words in the input stream in succession. Detection is by means of the separator - here a space. The word that we have just defined examines the remainder in the input stream on execution, carries out the same detection task as the interpreter and displays each separate word found on a new line on the screen.

FORTH has the following words to help here. M+ MI U/MOD M* U* M*I ( ( ( ( ( ( d n --- d-sum ) d n --- n-quotient ) (integer division ud u --- u-remainder u-quotient n1 n2 d-product ) u1 u2 ud-product ) d n u d-result ) In the same way that +1 used a double-length intermediate result, uses a triple-length intermediate result. Try to familiarise yourself with these different words by using them on examples of your own choosing. 5 Fixed Point Versus Floating Point As you will have no doubt noticed, up until now we have only introduced arithmetic words working on integers.

Download PDF sample

Rated 4.47 of 5 – based on 4 votes