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@@ -21,131 +21,40 @@
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*/
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import python.lib.Builtin;
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-/**
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- This class defines mathematical functions and constants.
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-**/
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@:pythonImport("math")
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@:coreApi
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extern class Math
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{
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static var PI(default,null) : Float;
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- /**
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- A special Float constant which denotes negative infinity.
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-
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- For example, this is the result of -1.0 / 0.0.
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-
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- Operations with NEGATIVE_INFINITY as an operand may result in
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- Operations with NEGATIVE_INFINITY as an operand may result in
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- NEGATIVE_INFINITY, POSITIVE_INFINITY or NaN. For detailed information,
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- see ...
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-
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- If this constant is converted to an Int, e.g. through Std.int(), the
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- result is unspecified.
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- **/
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static var NEGATIVE_INFINITY(default, null) : Float;
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- /**
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- A special Float constant which denotes negative infinity.
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-
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- For example, this is the result of 1.0 / 0.0.
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-
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- Operations with POSITIVE_INFINITY as an operand may result in
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- NEGATIVE_INFINITY, POSITIVE_INFINITY or NaN. For detailed information,
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- see ...
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-
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- If this constant is converted to an Int, e.g. through Std.int(), the
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- result is unspecified.
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- **/
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static var POSITIVE_INFINITY(default,null) : Float;
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- /**
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- A special Float constant which denotes an invalid number.
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-
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- NaN stands for "Not a Number". It occurs when a mathematically incorrect
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- operation is executed, such as taking the square root of a negative
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- number: Math.sqrt(-1).
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-
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- All further operations with NaN as an operand will result in NaN.
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-
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- If this constant is converted to an Int, e.g. through Std.int(), the
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- result is unspecified.
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-
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- In order to test if a value is NaN, you should use Math.isNaN() function.
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-
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- (Php) In PHP versions prior to 5.3.1 VC 9 there may be unexpected
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- results when performing arithmetic operations with NaN on Windows, see:
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- https://bugs.php.net/bug.php?id=42143
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- **/
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static var NaN(default, null) : Float;
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- /**
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- Returns the absolute value of `v`.
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-
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- If `v` is positive or 0, the result is unchanged. Otherwise the result
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- is -`v`.
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-
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- If `v` is NEGATIVE_INFINITY or POSITIVE_INFINITY, the result is
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- POSITIVE_INFINITY.
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-
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- If `v` is NaN, the result is NaN.
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- **/
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public static inline function abs(v:Float):Float
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{
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return (Math:Dynamic).fabs(v);
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}
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- /**
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- Returns the smaller of values `a` and `b`.
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-
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- If `a` or `b` are NaN, the result is NaN.
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-
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- If `a` or `b` are NEGATIVE_INFINITY, the result is NEGATIVE_INFINITY.
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-
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- If `a` and `b` are POSITIVE_INFINITY, the result is POSITIVE_INFINITY.
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- **/
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-
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public static inline function min(a:Float, b:Float):Float {
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return if (isNaN(a)) a else if (isNaN(b)) b else Builtin.min(a,b);
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}
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- /**
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- Returns the greater of values `a` and `b`.
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-
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- If `a` or `b` are NaN, the result is NaN.
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-
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- If `a` or `b` are POSITIVE_INFINITY, the result is POSITIVE_INFINITY.
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-
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- If `a` and `b` are NEGATIVE_INFINITY, the result is NEGATIVE_INFINITY.
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- **/
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public static inline function max(a:Float, b:Float):Float
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{
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return if (isNaN(a)) a else if (isNaN(b)) b else Builtin.max(a,b);
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}
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- /**
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- Returns the trigonometric sine of `v`.
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-
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- The unit of `v` is radians.
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-
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- If `v` is NaN or infinite, the result is NaN.
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- **/
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public static inline function sin(v:Float):Float {
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return if (v == POSITIVE_INFINITY || v == NEGATIVE_INFINITY) NaN else python.lib.Math.sin(v);
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}
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- /**
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- Returns the trigonometric cosine of `v`.
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-
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- The unit of `v` is radians.
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-
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- If `v` is NaN or infinite, the result is NaN.
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- **/
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public static inline function cos(v:Float):Float {
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return if (v == POSITIVE_INFINITY || v == NEGATIVE_INFINITY) NaN else python.lib.Math.cos(v);
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}
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-
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static function tan(v:Float):Float {
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return if (v == POSITIVE_INFINITY || v == NEGATIVE_INFINITY) NaN else python.lib.Math.tan(v);
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}
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@@ -162,17 +71,6 @@ extern class Math
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return if (v == POSITIVE_INFINITY || v == NEGATIVE_INFINITY) NaN else python.lib.Math.atan2(v);
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}
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- /**
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- Returns Euler's number, raised to the power of `v`.
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-
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- exp(1.0) is approximately 2.718281828459.
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-
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- If `v` is POSITIVE_INFINITY, the result is POSITIVE_INFINITY.
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-
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- If `v` is NEGATIVE_INFINITY, the result is 0.0.
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-
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- If `v` is NaN, the result is NaN.
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- **/
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public static inline function exp(v:Float):Float
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{
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if (v == NEGATIVE_INFINITY) {
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@@ -184,83 +82,30 @@ extern class Math
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}
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}
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- /**
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- Returns the natural logarithm of `v`.
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-
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- If `v` is negative (including NEGATIVE_INFINITY) or NaN, the result is
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- NaN.
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-
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- If `v` is POSITIVE_INFINITY, the result is POSITIVE_INFINITY.
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-
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- If `v` is 0.0, the result is NEGATIVE_INFINITY.
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-
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- This is the inverse operation of exp, i.e. log(exp(v)) == v always
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- holds.
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- **/
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public static inline function log(v:Float):Float {
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return if (v == 0.0) NEGATIVE_INFINITY else if (v < 0.0) NaN else python.lib.Math.log(v);
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}
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- // TODO
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- // http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/Math.html#pow(double, double) <-- wtf?
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static function pow(v:Float, exp:Float):Float;
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- /**
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- Returns the square root of `v`.
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-
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- If `v` is negative (including NEGATIVE_INFINITY) or NaN, the result is
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- NaN.
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-
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- If `v` is POSITIVE_INFINITY, the result is POSITIVE_INFINITY.
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-
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- If `v` is 0.0, the result is 0.0.
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- **/
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public static inline function sqrt(v:Float):Float
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{
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return if (v < 0) NaN else python.lib.Math.sqrt(v);
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}
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- /**
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- Rounds `v` to the nearest Int value.
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-
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- If v is outside of the signed Int32 range, or is NaN, NEGATIVE_INFINITY or POSITIVE_INFINITY, the result is unspecified.
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-
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- TODO: need spec
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- **/
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public static inline function round(v:Float):Int {
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return Math.floor(v + 0.5);
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}
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- /**
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- Returns the largest Int value that is not greater than `v`.
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-
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- If v is outside of the signed Int32 range, or is NaN, NEGATIVE_INFINITY or POSITIVE_INFINITY, the result is unspecified.
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-
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- TODO: need spec
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- **/
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static function floor(v:Float):Int;
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- /**
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- Returns the smallest Int value that is not less than `v`.
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-
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- If v is outside of the signed Int32 range, or is NaN, NEGATIVE_INFINITY or POSITIVE_INFINITY, the result is unspecified.
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-
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- TODO: need spec
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- **/
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static function ceil(v:Float):Int;
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- /**
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- Returns a pseudo-random number which is greater than or equal to 0.0,
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- and less than 1.0.
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- **/
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inline static function random() : Float {
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return python.lib.Random.random();
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}
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-
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-
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- static inline function ffloor( v : Float ) : Float
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- {
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+ static inline function ffloor( v : Float ) : Float {
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if (v == POSITIVE_INFINITY || v == NEGATIVE_INFINITY) return v;
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if (isNaN(v)) return NaN;
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return floor(v);
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@@ -273,34 +118,14 @@ extern class Math
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return ceil(v);
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}
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- static inline function fround( v : Float ) : Float
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- {
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+ static inline function fround( v : Float ) : Float {
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if (v == POSITIVE_INFINITY || v == NEGATIVE_INFINITY) return v;
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if (isNaN(v)) return NaN;
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return round(v);
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}
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-
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-
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-
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- /**
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- Tells if `f` is a finite number.
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-
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- If `f` is POSITIVE_INFINITY, NEGATIVE_INFINITY or NaN, the result is
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- false.
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-
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- Otherwise the result is true.
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- **/
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static inline function isFinite( f : Float ) : Bool return f != POSITIVE_INFINITY && f != NEGATIVE_INFINITY && !isNaN(f);
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- /**
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- Tells if `f` is not a valid number.
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-
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- If `f` is NaN, the result is true.
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-
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- Otherwise the result is false. In particular, both POSITIVE_INFINITY and
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- NEGATIVE_INFINITY are not considered NaN.
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- **/
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static inline function isNaN( f : Float ) : Bool {
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return python.lib.Math.isnan(f);
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