gotypes

func (Decimal) Abs ¶

func (d Decimal) Abs() Decimal

Abs returns the absolute value of the decimal.

func (Decimal) Add ¶

func (d Decimal) Add(d2 Decimal) Decimal

Add returns d + d2

func (Decimal) Cmp ¶

func (d Decimal) Cmp(d2 Decimal) int

Cmp compares the numbers represented by d and d2 and returns:

-1 if d <  d2
 0 if d == d2
+1 if d >  d2

func (Decimal) Cos ¶

func (d Decimal) Cos() Decimal

Cos returns the cosine of the radian argument x.

func (Decimal) Div ¶

func (d Decimal) Div(d2 Decimal) Decimal

Div returns d / d2. If it doesn't divide exactly, the result will have DivisionPrecision digits after the decimal point.

func (Decimal) Equal ¶

func (d Decimal) Equal(d2 Decimal) bool

Equal returns whether the numbers represented by d and d2 are equal.

func (Decimal) Float64 ¶

func (d Decimal) Float64() (f float64)

Float64 returns the nearest float64 value for d and a bool indicating whether f represents d exactly.

func (*Decimal) FromFloat ¶

func (d *Decimal) FromFloat(v float64)

func (*Decimal) FromInt ¶

func (d *Decimal) FromInt(v int64)

func (*Decimal) FromString ¶

func (d *Decimal) FromString(v string)

func (Decimal) GetBSON ¶

func (d Decimal) GetBSON() (interface{}, error)

GetBSON implements the bson.Getter interface (mgo.v2)

func (Decimal) GreaterThan ¶

func (d Decimal) GreaterThan(d2 Decimal) bool

GreaterThan (GT) returns true when d is greater than d2.

func (Decimal) GreaterThanOrEqual ¶

func (d Decimal) GreaterThanOrEqual(d2 Decimal) bool

GreaterThanOrEqual (GTE) returns true when d is greater than or equal to d2.

func (Decimal) IntPart ¶

func (d Decimal) IntPart() int64

IntPart returns the integer component of the decimal.

func (Decimal) IsNegative ¶

func (d Decimal) IsNegative() bool

IsNegative return

true if d < 0
false if d == 0
false if d > 0

func (Decimal) IsPositive ¶

func (d Decimal) IsPositive() bool

IsPositive return

true if d > 0
false if d == 0
false if d < 0

func (Decimal) IsZero ¶

func (d Decimal) IsZero() bool

IsZero return

true if d == 0
false if d > 0
false if d < 0

func (Decimal) LessThan ¶

func (d Decimal) LessThan(d2 Decimal) bool

LessThan (LT) returns true when d is less than d2.

func (Decimal) LessThanOrEqual ¶

func (d Decimal) LessThanOrEqual(d2 Decimal) bool

LessThanOrEqual (LTE) returns true when d is less than or equal to d2.

func (Decimal) Marshal ¶

func (d Decimal) Marshal() ([]byte, error)

func (Decimal) MarshalBSON ¶

func (d Decimal) MarshalBSON() ([]byte, error)

MarshalBSON implements the bson.Marshaler interface.

func (Decimal) MarshalBSONValue ¶

func (d Decimal) MarshalBSONValue() (bsontype.Type, []byte, error)

MarshalBSON implements the bson.Marshaler interface.

func (Decimal) MarshalBinary ¶

func (d Decimal) MarshalBinary() (data []byte, err error)

MarshalBinary implements the encoding.BinaryMarshaler interface.

func (Decimal) MarshalJSON ¶

func (d Decimal) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaler interface.

func (Decimal) MarshalText ¶

func (d Decimal) MarshalText() (text []byte, err error)

MarshalText implements the encoding.TextMarshaler interface for XML serialization.

func (Decimal) Max ¶

func (d Decimal) Max(rest ...Decimal) Decimal

Max returns the largest Decimal that was passed in the arguments. To call this function with an array, you must do: This makes it harder to accidentally call Max with 0 arguments.

func (Decimal) Min ¶

func (d Decimal) Min(rest ...Decimal) Decimal

Min returns the smallest Decimal that was passed in the arguments. To call this function with an array, you must do: This makes it harder to accidentally call Min with 0 arguments.

func (Decimal) Mod ¶

func (d Decimal) Mod(d2 Decimal) Decimal

Mod returns d % d2.

func (Decimal) Mul ¶

func (d Decimal) Mul(d2 Decimal) Decimal

Mul returns d * d2.

func (Decimal) Neg ¶

func (d Decimal) Neg() Decimal

Neg returns -d.

func (Decimal) Pow ¶

func (d Decimal) Pow(d2 Decimal) Decimal

Pow returns d to the power d2

func (Decimal) Round ¶

func (d Decimal) Round(places int32) Decimal

Round rounds the decimal to places decimal places. If places < 0, it will round the integer part to the nearest 10^(-places).

Example:

NewFromFloat(5.45).Round(1).String() // output: "5.5"
NewFromFloat(545).Round(-1).String() // output: "550"

func (*Decimal) Scan ¶

func (d *Decimal) Scan(src interface{}) error

Scan implements the sql.Scanner interface for database deserialization.

func (*Decimal) SetBSON ¶

func (d *Decimal) SetBSON(raw mgobson.Raw) error

SetBSON implements the bson.Setter interface (mgo.v2)

func (Decimal) Sign ¶

func (d Decimal) Sign() int

Sign returns:

-1 if d <  0
 0 if d == 0
+1 if d >  0

func (Decimal) Sin ¶

func (d Decimal) Sin() Decimal

Sin returns the sine of the radian argument x.

func (Decimal) String ¶

func (d Decimal) String() string

String returns the string representation of the decimal with the fixed point.

Example:

d := New(-12345, -3)
println(d.String())

Output:

-12.345

func (Decimal) StringFixed ¶

func (d Decimal) StringFixed(places int32) string

StringFixed returns a rounded fixed-point string with places digits after the decimal point.

Example:

NewFromFloat(0).StringFixed(2) // output: "0.00"
NewFromFloat(0).StringFixed(0) // output: "0"
NewFromFloat(5.45).StringFixed(0) // output: "5"
NewFromFloat(5.45).StringFixed(1) // output: "5.5"
NewFromFloat(5.45).StringFixed(2) // output: "5.45"
NewFromFloat(5.45).StringFixed(3) // output: "5.450"
NewFromFloat(545).StringFixed(-1) // output: "550"

func (Decimal) StringScaled ¶

func (d Decimal) StringScaled(exp int32) string

StringScaled first scales the decimal then calls .String() on it. NOTE: buggy, unintuitive, and DEPRECATED! Use StringFixed instead.

func (Decimal) Sub ¶

func (d Decimal) Sub(d2 Decimal) Decimal

Sub returns d - d2.

func (Decimal) Sum ¶

func (d Decimal) Sum(rest ...Decimal) Decimal

Sum returns the combined total of the provided first and rest Decimals

func (Decimal) Tan ¶

func (d Decimal) Tan() Decimal

Tan returns the tangent of the radian argument x.

func (Decimal) Truncate ¶

func (d Decimal) Truncate(precision int32) Decimal

Truncate truncates off digits from the number, without rounding.

NOTE: precision is the last digit that will not be truncated (must be >= 0).

Example:

decimal.NewFromString("123.456").Truncate(2).String() // "123.45"

func (*Decimal) Unmarshal ¶

func (d *Decimal) Unmarshal(data []byte) error

func (*Decimal) UnmarshalBSON ¶

func (d *Decimal) UnmarshalBSON(data []byte) error

func (*Decimal) UnmarshalBSONValue ¶

func (d *Decimal) UnmarshalBSONValue(_ bsontype.Type, data []byte) error

UnmarshalBSON implements the bson.Unmarshaler interface.

func (*Decimal) UnmarshalBinary ¶

func (d *Decimal) UnmarshalBinary(data []byte) error

UnmarshalBinary implements the encoding.BinaryUnmarshaler interface. As a string representation is already used when encoding to text, this method stores that string as []byte

func (*Decimal) UnmarshalJSON ¶

func (d *Decimal) UnmarshalJSON(decimalBytes []byte) error

UnmarshalJSON implements the json.Unmarshaler interface.

func (*Decimal) UnmarshalText ¶

func (d *Decimal) UnmarshalText(text []byte) error

UnmarshalText implements the encoding.TextUnmarshaler interface for XML deserialization.

func (Decimal) Value ¶

func (d Decimal) Value() (driver.Value, error)

Value implements the driver.Valuer interface for database serialization.