| class SwiftMathFunction(object): |
| def __init__(self, name, kind=None, swiftName=None, args="x", comment=None, |
| platforms=None): |
| self.name = name |
| self.swiftName = swiftName if swiftName is not None else name |
| self.kind = kind if kind is not None else "library" |
| self.args = args |
| if comment is not None: |
| self.comment = comment |
| else: |
| self.comment = "/// The " + str(self.swiftName) + " function." |
| self.platforms = platforms |
| |
| def params(self, prefix="", suffix=""): |
| return ", ".join(map(lambda a: prefix + a + suffix, self.args)) |
| |
| def decl(self, type): |
| return self.swiftName + "(" + self.params("_ ", ": " + type) + \ |
| ") -> " + type |
| |
| def free_decl(self, constraint="T: ElementaryFunctions"): |
| return self.swiftName + "<T>(" + self.params("_ ", ": T") + \ |
| ") -> T where " + constraint |
| |
| def impl(self, type): |
| if self.kind == "intrinsic": |
| builtin = "Builtin.int_" + self.name + "_FPIEEE" + str(type.bits) |
| return type.stdlib_name + "(" + builtin + "(" + \ |
| self.params("", "._value") + "))" |
| return "_swift_stdlib_" + self.name + type.cFuncSuffix + "(" + \ |
| self.params() + ")" |
| |
| |
| ElementaryFunctions = [ |
| SwiftMathFunction(name="sqrt", kind="intrinsic", |
| comment="/// The square root of `x`."), |
| SwiftMathFunction(name="cos", kind="intrinsic", |
| comment="/// The cosine of `x`."), |
| SwiftMathFunction(name="sin", kind="intrinsic", |
| comment="/// The sine of `x`."), |
| SwiftMathFunction(name="tan", |
| comment="/// The tangent of `x`."), |
| SwiftMathFunction(name="acos"), |
| SwiftMathFunction(name="asin"), |
| SwiftMathFunction(name="atan"), |
| SwiftMathFunction(name="cosh"), |
| SwiftMathFunction(name="sinh"), |
| SwiftMathFunction(name="tanh"), |
| SwiftMathFunction(name="acosh"), |
| SwiftMathFunction(name="asinh"), |
| SwiftMathFunction(name="atanh"), |
| SwiftMathFunction(name="exp", kind="intrinsic"), |
| SwiftMathFunction(name="exp2", kind="intrinsic"), |
| SwiftMathFunction(name="exp10"), |
| SwiftMathFunction(name="expm1"), |
| SwiftMathFunction(name="log", kind="intrinsic"), |
| SwiftMathFunction(name="log2", kind="intrinsic"), |
| SwiftMathFunction(name="log10", kind="intrinsic"), |
| SwiftMathFunction(name="log1p"), |
| # SwiftMathFunction(name="pow", kind="intrinsic", args="xy"), Handled |
| # separately for edge cases. |
| # SwiftMathFunction(name="root", args="xn"), Handled separately for |
| # implementation. |
| ] |
| |
| RealFunctions = [ |
| # SwiftMathFunction(name="atan2"), Handled separately for explicit |
| # argument labels. |
| SwiftMathFunction(name="erf"), |
| SwiftMathFunction(name="erfc"), |
| SwiftMathFunction(name="hypot", args="xy"), |
| SwiftMathFunction(name="tgamma", swiftName="gamma"), |
| # SwiftMathFunction(name="lgamma"), Handled separately for sign result. |
| ] |
