Android float from string

Constants

public static final int MAX_EXPONENT

Maximum base-2 exponent that a finite value of the float type may have. Equal to Math.getExponent(Float.MAX_VALUE) .

public static final float MAX_VALUE

Constant for the maximum float value, (2 — 2 -23 ) * 2 127 .

public static final int MIN_EXPONENT

Minimum base-2 exponent that a normal value of the float type may have. Equal to Math.getExponent(Float.MIN_NORMAL) .

public static final float MIN_NORMAL

Constant for the smallest positive normal value of the float type.

public static final float MIN_VALUE

Constant for the minimum float value, 2 -149 .

public static final float NEGATIVE_INFINITY

Constant for the negative infinity value of the float type.

public static final float NaN

Constant for the Not-a-Number (NaN) value of the float type.

public static final float POSITIVE_INFINITY

Constant for the positive infinity value of the float type.

public static final int SIZE

Constant for the number of bits needed to represent a float in two’s complement form.

Fields

public static final Class TYPE

The Class object that represents the primitive type float .

Public Constructors

public Float (float value)

Constructs a new Float with the specified primitive float value.

Parameters

public Float (double value)

Constructs a new Float with the specified primitive double value.

Parameters

public Float (String string)

Constructs a new Float from the specified string.

Parameters

Throws

See Also

Public Methods

public byte byteValue ()

Returns this object’s value as a byte. Might involve rounding and/or truncating the value, so it fits into a byte.

Returns

• the primitive byte value of this object.

public static int compare (float float1, float float2)

Compares the two specified float values. There are two special cases:

• Float.NaN is equal to Float.NaN and it is greater than any other float value, including Float.POSITIVE_INFINITY ;
• +0.0f is greater than -0.0f

Parameters

Returns

• a negative value if float1 is less than float2 ; 0 if float1 and float2 are equal; a positive value if float1 is greater than float2 .

public int compareTo (Float object)

Compares this object to the specified float object to determine their relative order. There are two special cases:

• Float.NaN is equal to Float.NaN and it is greater than any other float value, including Float.POSITIVE_INFINITY ;
• +0.0f is greater than -0.0f

Parameters

Returns

• a negative value if the value of this float is less than the value of object ; 0 if the value of this float and the value of object are equal; a positive value if the value of this float is greater than the value of object .

See Also

public double doubleValue ()

Returns this object’s value as a double. Might involve rounding.

Returns

• the primitive double value of this object.

public boolean equals (Object object)

Tests this double for equality with object . To be equal, object must be an instance of Float and floatToIntBits must give the same value for both objects.

Note that, unlike == , -0.0 and +0.0 compare unequal, and NaN s compare equal by this method.

Parameters

Returns

• true if the specified object is equal to this Float ; false otherwise.

public static int floatToIntBits (float value)

Returns an integer corresponding to the bits of the given IEEE 754 single precision float value . All Not-a-Number (NaN) values are converted to a single NaN representation ( 0x7fc00000 ) (compare to floatToRawIntBits(float) ).

public static int floatToRawIntBits (float value)

Returns an integer corresponding to the bits of the given IEEE 754 single precision float value . Not-a-Number (NaN) values are preserved (compare to floatToIntBits(float) ).

public float floatValue ()

Gets the primitive value of this float.

Returns

public int hashCode ()

Returns an integer hash code for this object. By contract, any two objects for which equals(Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Returns

public static float intBitsToFloat (int bits)

Returns the IEEE 754 single precision float corresponding to the given bits .

public int intValue ()

Returns this object’s value as an int. Might involve rounding and/or truncating the value, so it fits into an int.

Returns

• the primitive int value of this object.

public static boolean isInfinite (float f)

Indicates whether the specified float represents an infinite value.

Источник

Float

Class Overview

The wrapper for the primitive type float .

See Also

Summary

Public Constructors

Constants public static final int MAX_EXPONENT Maximum base-2 exponent that a finite value of the float type may have. Equal to Math.getExponent(Float.MAX_VALUE) . public static final float MAX_VALUE Constant for the maximum float value, (2 — 2 -23 ) * 2 127 . public static final int MIN_EXPONENT Minimum base-2 exponent that a normal value of the float type may have. Equal to Math.getExponent(Float.MIN_NORMAL) . public static final float MIN_NORMAL Constant for the smallest positive normal value of the float type. public static final float MIN_VALUE Constant for the minimum float value, 2 -149 . public static final float NEGATIVE_INFINITY Constant for the negative infinity value of the float type. public static final float NaN Constant for the Not-a-Number (NaN) value of the float type. public static final float POSITIVE_INFINITY Constant for the positive infinity value of the float type. public static final int SIZE Constant for the number of bits needed to represent a float in two’s complement form. Fields public static final Class TYPE The Class object that represents the primitive type float . Public Constructors public Float (float value) Constructs a new Float with the specified primitive float value. Parameters value the primitive float value to store in the new instance. public Float (double value) Constructs a new Float with the specified primitive double value. Parameters value the primitive double value to store in the new instance. public Float (String string) Constructs a new Float from the specified string. Parameters string the string representation of a float value. Throws NumberFormatException if string can not be parsed as a float value. See Also Public Methods public byte byteValue () Returns this object’s value as a byte. Might involve rounding and/or truncating the value, so it fits into a byte. Returns the primitive byte value of this object. public static int compare (float float1, float float2) Compares the two specified float values. There are two special cases: Float.NaN is equal to Float.NaN and it is greater than any other float value, including Float.POSITIVE_INFINITY ; +0.0f is greater than -0.0f Parameters float1 the first value to compare. float2 the second value to compare. Returns a negative value if float1 is less than float2 ; 0 if float1 and float2 are equal; a positive value if float1 is greater than float2 . public int compareTo (Float object) Compares this object to the specified float object to determine their relative order. There are two special cases: Float.NaN is equal to Float.NaN and it is greater than any other float value, including Float.POSITIVE_INFINITY ; +0.0f is greater than -0.0f Parameters object the float object to compare this object to. Returns a negative value if the value of this float is less than the value of object ; 0 if the value of this float and the value of object are equal; a positive value if the value of this float is greater than the value of object . See Also public double doubleValue () Returns this object’s value as a double. Might involve rounding. Returns the primitive double value of this object. public boolean equals (Object object) Tests this double for equality with object . To be equal, object must be an instance of Float and floatToIntBits must give the same value for both objects. Note that, unlike == , -0.0 and +0.0 compare unequal, and NaN s compare equal by this method. Parameters object the object to compare this float with. Returns true if the specified object is equal to this Float ; false otherwise. public static int floatToIntBits (float value) Returns an integer corresponding to the bits of the given IEEE 754 single precision float value . All Not-a-Number (NaN) values are converted to a single NaN representation ( 0x7fc00000 ) (compare to floatToRawIntBits(float) ). public static int floatToRawIntBits (float value) Returns an integer corresponding to the bits of the given IEEE 754 single precision float value . Not-a-Number (NaN) values are preserved (compare to floatToIntBits(float) ). public float floatValue () Gets the primitive value of this float. Returns public int hashCode () Returns an integer hash code for this object. By contract, any two objects for which equals(Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method. Note that hash values must not change over time unless information used in equals comparisons also changes. See Writing a correct hashCode method if you intend implementing your own hashCode method. Returns public static float intBitsToFloat (int bits) Returns the IEEE 754 single precision float corresponding to the given bits . public int intValue () Returns this object’s value as an int. Might involve rounding and/or truncating the value, so it fits into an int. Returns the primitive int value of this object. public static boolean isInfinite (float f) Indicates whether the specified float represents an infinite value. Источник Читайте также:  Фнаф 6 русификатор андроид Оцените статью Вам также может понравиться Как деактивировать режим наушников на смартфоне с Android? Когда к мобильному устройству присоединены наушники Обзор игры Джелли-Джу для Android В последние годы популярность мобильных игр резко возросла Лучшие шахматные приложения для iOS и Android Нынешний читерский скандал в шахматном мире сейчас Что хотят увидеть пользователи от Android 5.0 Key Lime Pie ОС Google Android развивается, и по всему видимому Правообладателям Политика конфиденциальности Контакты