| //===----------------------------------------------------------------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| @_exported import SwiftGlibc // Clang module |
| |
| public let MAP_FAILED: UnsafeMutableRawPointer! = UnsafeMutableRawPointer(bitPattern: -1) |
| |
| // Constants defined by <math.h> |
| @available(swift, deprecated: 3.0, message: "Please use 'Double.pi' or '.pi' to get the value of correct type and avoid casting.") |
| public let M_PI = Double.pi |
| |
| @available(swift, deprecated: 3.0, message: "Please use 'Double.pi / 2' or '.pi / 2' to get the value of correct type and avoid casting.") |
| public let M_PI_2 = Double.pi / 2 |
| |
| @available(swift, deprecated: 3.0, message: "Please use 'Double.pi / 4' or '.pi / 4' to get the value of correct type and avoid casting.") |
| public let M_PI_4 = Double.pi / 4 |
| |
| @available(swift, deprecated: 3.0, message: "Please use '2.squareRoot()'.") |
| public let M_SQRT2 = 2.squareRoot() |
| |
| @available(swift, deprecated: 3.0, message: "Please use '0.5.squareRoot()'.") |
| public let M_SQRT1_2 = 0.5.squareRoot() |
| |
| // Constants defined by <float.h> |
| @available(swift, deprecated: 3.0, message: "Please use 'T.radix' to get the radix of a FloatingPoint type 'T'.") |
| public let FLT_RADIX = Double.radix |
| |
| %for type, prefix in [('Float', 'FLT'), ('Double', 'DBL'), ('Float80', 'LDBL')]: |
| % if type == "Float80": |
| #if arch(i386) || arch(x86_64) |
| % end |
| // Where does the 1 come from? C counts the usually-implicit leading |
| // significand bit, but Swift does not. Neither is really right or wrong. |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.significandBitCount + 1'.") |
| public let ${prefix}_MANT_DIG = ${type}.significandBitCount + 1 |
| |
| // Where does the 1 come from? C models floating-point numbers as having a |
| // significand in [0.5, 1), but Swift (following IEEE 754) considers the |
| // significand to be in [1, 2). This rationale applies to ${prefix}_MIN_EXP |
| // as well. |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.greatestFiniteMagnitude.exponent + 1'.") |
| public let ${prefix}_MAX_EXP = ${type}.greatestFiniteMagnitude.exponent + 1 |
| |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.leastNormalMagnitude.exponent + 1'.") |
| public let ${prefix}_MIN_EXP = ${type}.leastNormalMagnitude.exponent + 1 |
| |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.greatestFiniteMagnitude' or '.greatestFiniteMagnitude'.") |
| public let ${prefix}_MAX = ${type}.greatestFiniteMagnitude |
| |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.ulpOfOne' or '.ulpOfOne'.") |
| public let ${prefix}_EPSILON = ${type}.ulpOfOne |
| |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.leastNormalMagnitude' or '.leastNormalMagnitude'.") |
| public let ${prefix}_MIN = ${type}.leastNormalMagnitude |
| |
| @available(swift, deprecated: 3.0, message: "Please use '${type}.leastNonzeroMagnitude' or '.leastNonzeroMagnitude'.") |
| public let ${prefix}_TRUE_MIN = ${type}.leastNonzeroMagnitude |
| |
| % if type == "Float80": |
| #endif |
| % end |
| %end |