Datatype Bignum
[Urlan Datatype System]

64.48 fixed point numbers appropriate for storage in UCells. More...

Files
file	bignum.h
Functions
void	bignum_zero (UCell *cell)
	Set bignum to zero.
void	bignum_seti (UCell *cell, int n)
	Initialize bignum from an integer.
void	bignum_setl (UCell *cell, int64_t n)
	Initialize bignum from a 64-bit integer.
void	bignum_setd (UCell *cell, double n)
	Initialize bignum from a double.
int64_t	bignum_l (const UCell *cell)
	Convert the bignum to a 64-bit integer.
double	bignum_d (const UCell *cell)
	Convert the bignum to a double.
int	bignum_equal (const UCell *a, const UCell *b)
	Test if two bignums are the same.
int	bignum_cmp (const UCell *a, const UCell *b)
	Compare two bignums.
void	bignum_abs (UCell *cell)
	Convert to absolute value.
void	bignum_negate (const UCell *cell, UCell *result)
	Negate the bignum.
void	bignum_add (const UCell *a, const UCell *b, UCell *result)
	Get the sum of two bignums.
void	bignum_sub (const UCell *a, const UCell *b, UCell *result)
	Get the difference between two bignums.
void	bignum_mul (const UCell *a, const UCell *b, UCell *result)
	Get the product of two bignums.

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Detailed Description

64.48 fixed point numbers appropriate for storage in UCells.

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Function Documentation

void bignum_add	(	const UCell *	a,
		const UCell *	b,
		UCell *	result
	)

Get the sum of two bignums.

A, b, & result may point to the same cell.

int bignum_cmp	(	const UCell *	a,
		const UCell *	b
	)

Compare two bignums.

Returns:

1, 0, or -1 if a is greater than, equal to, or less than b.

int bignum_equal	(	const UCell *	a,
		const UCell *	b
	)

Test if two bignums are the same.

Returns:

Non-zero if the bignum cells are equal.

void bignum_mul	(	const UCell *	a,
		const UCell *	b,
		UCell *	result
	)

Get the product of two bignums.

A, b, & result may point to the same cell.

void bignum_negate	(	const UCell *	cell,
		UCell *	result
	)

Negate the bignum.

Cell and result may be the same.

void bignum_sub	(	const UCell *	a,
		const UCell *	b,
		UCell *	result
	)

Get the difference between two bignums.

A, b, & result may point to the same cell.

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