stdlib/public/core/BuiltinMath.swift.gyb

//===--- BuiltinMath.swift.gyb --------------------------------*- swift -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//

%{

# Don't need 64-bit (Double/CDouble) overlays. The ordinary C imports work fine.
overlayFloatBits = [32, 80]
allFloatBits = [32, 64, 80]

def floatName(bits):
    if bits == 32:
        return 'Float'
    if bits == 64:
        return 'Double'
    if bits == 80:
        return 'Float80'

def cFloatName(bits):
    if bits == 32:
        return 'CFloat'
    if bits == 64:
        return 'CDouble'
    if bits == 80:
        return 'CLongDouble'

def cFuncSuffix(bits):
    if bits == 32:
        return 'f'
    if bits == 64:
        return ''
    if bits == 80:
        return 'l'

# Each of the following lists is ordered to match math.h

# These functions have a corresponding LLVM intrinsic
# Note, keep this up to date with Darwin/tgmath.swift.gyb
UnaryIntrinsicFunctions = [
    'cos', 'sin',
    'exp', 'exp2',
    'log', 'log10', 'log2',
    'nearbyint', 'rint',
]

def TypedUnaryIntrinsicFunctions():
    for ufunc in UnaryIntrinsicFunctions:
        for bits in allFloatBits:
            yield floatName(bits), cFloatName(bits), bits, ufunc

}%

// Unary intrinsic functions
// Note these have a corresponding LLVM intrinsic
% for T, CT, bits, ufunc in TypedUnaryIntrinsicFunctions():
%  if bits == 80:
#if !os(Windows) && (arch(i386) || arch(x86_64))
%  end
@_transparent
public func _${ufunc}(_ x: ${T}) -> ${T} {
  return ${T}(Builtin.int_${ufunc}_FPIEEE${bits}(x._value))
}
%  if bits == 80:
#endif
%  end
% end

// ${'Local Variables'}:
// eval: (read-only-mode 1)
// End: