import type { ExprValue } from '../types.js';
/**
 * Return true if the floating point value is not a number, false otherwise.
 * @param expr The input number.
 */
export declare function isNaN(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Return true if the floating point value is finite, false otherwise.
 * @param expr The input number.
 */
export declare function isFinite(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Return true if the floating point value is infinite, false otherwise.
 * @param expr The input number.
 */
export declare function isInfinite(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Selects the largest value.
 * @param expr The input expressions.
 */
export declare function greatest(...expr: ExprValue[]): import("../index.js").FunctionNode;
/**
 * Selects the smallest value.
 * @param expr The input expressions.
 */
export declare function least(...expr: ExprValue[]): import("../index.js").FunctionNode;
/**
 * Compute the exponentional function `e ** expr`.
 * @param expr The input number.
 */
export declare function exp(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Compute a base 10 logarithm.
 * @param expr The input number.
 */
export declare function log(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Compute a natural logarithm.
 * @param expr The input number.
 */
export declare function ln(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Compute the sign of a number.
 * @param expr The input number.
 */
export declare function sign(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Compute the absolute value of a number.
 * @param expr The input number.
 */
export declare function abs(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Compute the square root of a number.
 * @param expr The input number.
 */
export declare function sqrt(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Rounds the number up.
 * @param expr The input number.
 */
export declare function ceil(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Rounds the number down.
 * @param expr The input number.
 */
export declare function floor(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Round to the given decimal places.
 * @param expr The input number.
 * @param places The decimal places.
 *  Negative values are allowed, to round to tens, hundreds, etc.
 *  If unspecified, defaults to zero.
 */
export declare function round(expr: ExprValue, places?: ExprValue): import("../index.js").FunctionNode;
/**
 * Truncates the number.
 * @param expr The input number.
 */
export declare function trunc(expr: ExprValue): import("../index.js").FunctionNode;
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