tupelo.math — tupelo 23.03.04

Miscellaneous functions.

->bigdec-2 clj

(->bigdec-2 val)

Inputs: [val :- (s/cond-pre s/Num s/Str)] Returns: BigDecimal

Coerces a numeric value to a BigDecimal with 2 decimal digits. Also accepts a numeric value encoded as a String.

->bigdec-N clj

(->bigdec-N val N)

Inputs: [val :- (s/cond-pre s/Num s/Str) N :- s/Int] Returns: BigDecimal

Coerces a numeric value to a BigDecimal with N decimal digits. Also accepts a numeric value encoded as a String.

binary-chars->BigInteger clj

(binary-chars->BigInteger bin-chars)

Inputs: [bin-chars :- [Character]] Returns: BigInteger

Converts a binary char sequence into a (positive) BigInteger

binary-str->BigInteger clj

(binary-str->BigInteger bin-str)

Inputs: [bin-str :- s/Str] Returns: BigInteger

Converts a binary char sequence into a (positive) BigInteger

ceil-long clj

(ceil-long x)

factorial clj/s

(factorial n)

Inputs: [n :- s/Int] Returns: s/Int

Computes the factorial of N

floor-long clj

(floor-long x)

int->binary-chars clj

(int->binary-chars bi)

Inputs: [bi :- s/Int] Returns: [Character]

Converts a (positive) BigInteger into a binary char sequence

int->binary-str clj

(int->binary-str ival)

Inputs: [ival :- s/Int] Returns: s/Str

Converts an integer into a binary String

int->bitchars clj

(int->bitchars ival bits-width)

Inputs: [ival :- s/Int bits-width :- s/Int] Returns: tsk/Vec

int->bitstr clj

(int->bitstr ival bits-width)

Inputs: [ival :- s/Int bits-width :- s/Int] Returns: s/Str

int->hex-str clj

(int->hex-str ival min-width)

Inputs: [ival :- s/Int min-width :- s/Int] Returns: s/Str

Converts a (positive) BigInteger into a hex string of min-width chars

log2 clj

(log2 x)

Inputs: [x :- s/Num] Returns: Double

Returns the log base-2 of x

pow->BigInteger clj

(pow->BigInteger base exp)

Inputs: [base :- s/Int exp :- s/Int] Returns: BigInteger

An BigInteger version of java.Math/pow( base, exp )

pow->Long clj

(pow->Long base exp)

Inputs: [base :- s/Int exp :- s/Int] Returns: s/Int

An Long (integer) version of java.Math/pow( base, exp )

round-long clj

(round-long x)

round-N clj

(round-N val N)

Inputs: [val :- s/Num N :- s/Int] Returns: Double

Round a floating point number to N decimal places, returning a double.

       (round-decimals 3.14156  2) => 3.14
       (round-decimals 1234567 -2) => 1234500

same-sign clj/s

(same-sign x y)

Inputs: [x :- s/Num y :- s/Num] Returns: s/Bool

Returns true iff x and y have the same sign, or are both zero.

signum clj/s

(signum x)

Inputs: [x :- s/Num] Returns: s/Int

Returns either -1, 0, or +1, to indicate the sign of the input.

trunc-long clj

(trunc-long x)