runtime/Belt_Float.res

/* Copyright (C) 2017 Hongbo Zhang, Authors of ReScript
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * In addition to the permissions granted to you by the LGPL, you may combine
 * or link a "work that uses the Library" with a publicly distributed version
 * of this file to produce a combined library or application, then distribute
 * that combined work under the terms of your choosing, with no requirement
 * to comply with the obligations normally placed on you by section 4 of the
 * LGPL version 3 (or the corresponding section of a later version of the LGPL
 * should you choose to use a later version).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */

/*** [`Belt.Float`]()
    Utilities for Float
*/

@val external isNaN: float => bool = "isNaN"

external toInt: float => int = "%intoffloat"

external fromInt: int => float = "%identity"

@val external fromString: string => float = "parseFloat"

let fromString = i =>
  switch fromString(i) {
  | i if isNaN(i) => None
  | i => Some(i)
  }

@val external toString: float => string = "String"

external \"+": (float, float) => float = "%addfloat"

external \"-": (float, float) => float = "%subfloat"

external \"*": (float, float) => float = "%mulfloat"

external \"/": (float, float) => float = "%divfloat"