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arithmetic functions
summary
This subchapter looks at arithmetic functions.
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arithmetic functions
This subchapter looks at arithmetic functions.
Ada
“42.1/2 The predefined standard library packages provide facilities such as string manipulation, containers of various kinds (vectors, lists, maps, etc.), mathematical functions, random number generation, and access to the execution environment.” —:Ada-Europe’s Ada Reference Manual: Introduction: Language Summary See legal information
“2 Finally, a predefined environment of standard packages is provided, including facilities for, among others, input-output, string manipulation, numeric elementary functions, and random number generation.” —:Ada-Europe’s Ada Reference Manual: Section 1: General See legal information
The absolute value of a real number is defined as the square root of the square of the number.
ALGOL abs(E) — ALGOL-60 library function that returns the absolute value of an expression.
APL |(x) — APL monadic function that returns the absolute value of a scalar, vector, or matrix. Form is |B.
BASIC ABS(x) — BASIC library function that returns the absolute value of an expression. Some BASIC interpreters only allow the expression x to be a variable name or a numeric literal. Many BASIC interpreters allow the use of ABS within any arithmetic expression.
JOVIAL ABS(x) — JOVIAL function that returns the absolute value of a numeric data type.
LISP ABS(x) — LISP function that takes one argument of type number and returns the absolute value.
Pascal abs(x) — Pascal standard function that returns the absolute value of an argument x.
PL/I ABS — Pl/I built-in function that returns the absolute value of a variable or expression.
PostScript abs(x) — PosScript arithmetic operator that places on the top of the stack the absolute value of the number previously on the top of stack. Returns the same numeric type unless the number is the most negative integer, in which case it returns a real.
ALGOL sign(E) — ALGOL-60 library function that returns the sign (plus + or minus -) of an expression.
BASIC SGN(x) — BASIC library function that returns the sign of an expression. The result of negative one (-1) indicates a negative number. The result of zero (0) indicates zero. The result of positive one (1) indicates a positive number.
nbsp; SGN(x) — JOVIAL function that returns the sign of a numeric data type. The results are +1 for positive, 0 for zero, and -1 for negative.
Pascal odd(x) — Pascal standard function that returns true if an argument x is odd; otherise returns false (x must be INTEGER)..
ALGOL sqrt(E) — ALGOL-60 library function that returns the square root of an expression.
Pascal sqrt(x) — Pascal standard function that returns the REAL square root of an argument x.
Pascal sqr(x) — Pascal standard function that returns the square of an argument x..
BASIC RND — BASIC library function that returns a random number. The random number is between zero (0) and one (1). You can muliply by a larger number and then round or truncate to an integer to obtain an integer range (such as for a roll of dice). The official ANSI tsandard calls for RND to be used alone, but most BASIC compilers use the form of RND(n), where n has a compiler specific meaning. The ANSI standard calls for the sequence of random numbers to always be exactly the same on each run of a program (for debugging purposes) unless the BASIC command word RANDOMIZE is used..
JOVIAL
The following material is from the unclassified Computer Programming Manual for the JOVIAL (J73) Language, RADC-TR-81-143, Final Technical Report of June 1981.
1.1.5 Built-In Functions
The JOVIAL built-in functions provide advanced, specialized
operations that are not covered by the JOVIAL operators.
ABS(x) Absolute value of x
SGN(x) +1, 0, or -1 for x>0, x=0, x<0
Chapter 1 Introduction, page 9
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