math

func AbsFloat ¶

func AbsFloat(num float64) float64

AbsFloat returns the absolute float64 value of float64 num.

func AbsFloat64 ¶

func AbsFloat64(num float64) float64

AbsFloat64 returns the absolute float64 value of float64 num.

func AbsInt ¶

func AbsInt(num int) int

AbsInt returns the absolute int value of int num.

func AbsInt64 ¶

func AbsInt64(num int64) int64

AbsInt64 returns the absolute int64 value of int64 num.

func Average ¶

func Average(nums ...interface{}) float64

Average returns the float64 average of nums.

func AverageFloat ¶

func AverageFloat(nums ...float64) float64

AverageFloat returns the float64 average of float64 nums.

func AverageFloat64 ¶

func AverageFloat64(nums ...float64) float64

AverageFloat64 returns the float64 average of float64 nums.

func AverageInt ¶

func AverageInt(nums ...int) float64

AverageInt returns the float64 average of int nums.

func AverageInt64 ¶

func AverageInt64(nums ...int64) float64

AverageInt64 returns the float64 average of int64 nums.

func Compare ¶

func Compare(f1, f2 float64, places ...int) int

Compare compares f1 and f2 and returns:

-1 if   f1 < f2
 0 if | f1 - f2 | <= 10 ^ -places, default places is 9
+1 if   f1 > f2

func Equal ¶

func Equal(f1, f2 float64, places ...int) bool

Equal reports whether f1 and f2 are equal.

func GreaterThan ¶

func GreaterThan(f1, f2 float64, places ...int) bool

GreaterThan (GT) returns true when f1 is greater than f2.

func GreaterThanOrEqual ¶

func GreaterThanOrEqual(f1, f2 float64, places ...int) bool

GreaterThanOrEqual (GTE) returns true when f1 is greater than or equal to f2.

func IsEven ¶

func IsEven(num int64) bool

IsEven reports whether num is even number.

func IsNegative ¶

func IsNegative(f float64) bool

IsNegative returns:

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

func IsNonNegative ¶

func IsNonNegative(f float64) bool

IsNonNegative returns:

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

func IsNonPositive ¶

func IsNonPositive(f float64) bool

IsNonPositive returns:

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

func IsOdd ¶

func IsOdd(num int64) bool

IsOdd reports whether num is odd number.

func IsPositive ¶

func IsPositive(f float64) bool

IsPositive returns:

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

func IsZero ¶

func IsZero(f float64) bool

IsZero returns:

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

func LessThan ¶

func LessThan(f1, f2 float64, places ...int) bool

LessThan (LT) returns true when f1 is less than f2.

func LessThanOrEqual ¶

func LessThanOrEqual(f1, f2 float64, places ...int) bool

LessThanOrEqual (LTE) returns true when f1 is less than or equal to f2.

func Max ¶

func Max(nums ...interface{}) float64

Max returns the largest float64 number in nums.

func MaxFloat ¶

func MaxFloat(nums ...float64) float64

MaxFloat returns the largest float64 number in float64 nums.

func MaxFloat64 ¶

func MaxFloat64(nums ...float64) float64

MaxFloat64 returns the largest float64 number in float64 nums.

func MaxInt ¶

func MaxInt(nums ...int) int

MaxInt returns the largest int number in int nums.

func MaxInt64 ¶

func MaxInt64(nums ...int64) int64

MaxInt64 returns the largest int64 number in int64 nums.

func Min ¶

func Min(nums ...interface{}) float64

Min returns the smallest float64 number in nums.

func MinFloat ¶

func MinFloat(nums ...float64) float64

MinFloat returns the smallest float64 number in float64 nums.

func MinFloat64 ¶

func MinFloat64(nums ...float64) float64

MinFloat64 returns the smallest float64 number in float64 nums.

func MinInt ¶

func MinInt(nums ...int) int

MinInt returns the smallest int number in int nums.

func MinInt64 ¶

func MinInt64(nums ...int64) int64

MinInt64 returns the smallest int64 number in int64 nums.

func NumberFormat ¶

func NumberFormat(num float64, places int, separator ...string) string

NumberFormat returns the formatted num with grouped thousands.

func Percent ¶

func Percent(num, total interface{}) float64

Percent returns the float64 percentage of num in total.

func RandFloat ¶

func RandFloat(min, max float64) float64

RandFloat returns float64 pseudo-random number in [min, max).

func RandFloat64 ¶

func RandFloat64(min, max float64) float64

RandFloat64 returns float64 pseudo-random number in [min, max).

func RandInt ¶

func RandInt(min, max int) int

RandInt returns int pseudo-random number in [min, max).

func RandInt64 ¶

func RandInt64(min, max int64) int64

RandInt64 returns int64 pseudo-random number in [min, max).

func RangeFloat ¶

func RangeFloat(start, stop float64, step ...float64) []float64

RangeFloat returns a float64 slice, starting from float64 start, and increments by float64 step, and stops before float64 stop. If start < stop, default step is 1, else default step is -1.

func RangeFloat64 ¶

func RangeFloat64(start, stop float64, step ...float64) []float64

RangeFloat64 returns a float64 slice, starting from float64 start, and increments by float64 step, and stops before float64 stop. If start < stop, default step is 1, else default step is -1.

func RangeInt ¶

func RangeInt(start, stop int, step ...int) []int

RangeInt returns a int slice, starting from int start, and increments by int step, and stops before int stop. If start < stop, default step is 1, else default step is -1.

func RangeInt64 ¶

func RangeInt64(start, stop int64, step ...int64) []int64

RangeInt64 returns a int64 slice, starting from int64 start, and increments by int64 step, and stops before int64 stop. If start < stop, default step is 1, else default step is -1.

func Round ¶

func Round(f float64, places int) float64

Round rounds the f to places.

func RoundBank ¶

func RoundBank(f float64, places int) float64

RoundBank banker rounds the f to places.

func RoundBankToString ¶

func RoundBankToString(f float64, places int) string

RoundBankToString returns a banker rounded fixed-point string with places digits after the f point.

func RoundToString ¶

func RoundToString(f float64, places int) string

RoundToString returns a rounded fixed-point string with places digits after the f point.

func Sign ¶

func Sign(f float64) int

Sign returns:

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

func SizeFormat ¶

func SizeFormat(size float64, places int, separator ...string) string

SizeFormat returns the formatted size with storage unit.

func Sum ¶

func Sum(nums ...interface{}) float64

Sum returns the float64 sum of nums.

func SumFloat ¶

func SumFloat(nums ...float64) float64

SumFloat returns the float64 sum of float64 nums.

func SumFloat64 ¶

func SumFloat64(nums ...float64) float64

SumFloat64 returns the float64 sum of float64 nums.

func SumInt ¶

func SumInt(nums ...int) int

SumInt returns the int sum of int nums.

func SumInt64 ¶

func SumInt64(nums ...int64) int64

SumInt64 returns the int64 sum of int64 nums.