XLISP <=

Nyquist / XLISP 2.0 - Contents | Tutorials | Examples | Reference

# <=

Type: | - | function (subr)
Source: | - | xlmath.c

## Syntax

(<= expr1 expr2 ...)
  exprN - a numeric expression
  returns - T if the results of comparing the expressions are all true, NIL otherwise

## Description

The '<=' [less-than-or-equal] function takes an arbitrary number of numeric arguments. It checks to see if all the numbers are monotonically non-decreasing. T is returned if the arguments are numerically, and monotonically non-decreasing, NIL is returned otherwise. For two arguments, this has the effect of testing if 'expr1' is less than or equal to 'expr2'.

## Examples

    (<= 1 1)            => T
    (<= 1 2)            => T
    (<= 2.0 1.99)       => NIL
    (<= 1 2 3 3)        => T
    (<= 1 2 3 3 2)      => NIL
    (<= "aa" "aa")      => error: bad argument type
    (setq a 12 b 99.9)  => 99.9  ; set up A and B with values
    (<= a b)            => T
    (<= b a)            => NIL

See setq.

See also:

- Contents → Arithmetic Functions

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Nyquist / XLISP 2.0 - Contents | Tutorials | Examples | Reference