Q16.16

Macros
#define	FIX16(x)
	Macro for defininge fix16_t constant values.

Typedefs
typedef int32_t	fix16_t
	Fixed point Q16.16.

Functions
static int32_t	fix16_low_mul (fix16_t a, fix16_t b)
	Not yet documented.
static int32_t	fix16_high_mul (fix16_t a, fix16_t b)
	Not yet documented.
static fix16_t	fix16_mul (fix16_t a, fix16_t b)
	Not yet documented.
static fix16_t	fix16_int32_from (int32_t value)
	Not yet documented.
static int32_t	fix16_int32_to (fix16_t value)
	Not yet documented.
static int32_t	fix16_round_int32_to (fix16_t value)
	Not yet documented.
static uint32_t	fix16_integral (fix16_t value)
	Not yet documented.
static uint32_t	fix16_fractional (fix16_t value)
	Not yet documented.
static fix16_t	fix16_floor (fix16_t value)
	Not yet documented.
static fix16_t	fix16_ceil (fix16_t value)
	Not yet documented.
bool	fix16_overflow_add (fix16_t a, fix16_t b, fix16_t *sum)
	Not yet documented.
bool	fix16_overflow_sub (fix16_t a, fix16_t b, fix16_t *diff)
	Not yet documented.
fix16_t	fix16_div (fix16_t dividend, fix16_t divisor)
	Not yet documented.
fix16_t	fix16_lerp (fix16_t a, fix16_t b, fix16_t t)
	Not yet documented.
fix16_t	fix16_lerp8 (fix16_t a, fix16_t b, const uint8_t t)
	Not yet documented.
fix16_t	fix16_sqrt (fix16_t value)
	Not yet documented.
size_t	fix16_str (fix16_t value, char *buffer, int32_t decimals)
	Not yet documented.

Detailed Description

Description goes here.

Macro Definition Documentation

FIX16

#define FIX16

(

x

)

Value:

    ((fix16_t)(((x) >= 0)                                         \
    ? ((double)(x) * 65536.0 + 0.5)                                            \
    : ((double)(x) * 65536.0 - 0.5)))

Macro for defininge fix16_t constant values.

Note

The argument is evaluated multiple times, and also otherwise you should only use this for constant values. For runtime-conversions, use the inlined functions below.

Parameters

x	The constant value.

Function Documentation

fix16_low_mul()

static int32_t fix16_low_mul ( fix16_t  a, fix16_t  b  )

inlinestatic

Not yet documented.

Parameters

a	Operand.
b	Operand.

Returns

The value.

fix16_high_mul()

static int32_t fix16_high_mul ( fix16_t  a, fix16_t  b  )

inlinestatic

Not yet documented.

Parameters

a	Operand.
b	Operand.

Returns

The value.

fix16_mul()

static fix16_t fix16_mul ( fix16_t  a, fix16_t  b  )

inlinestatic

Not yet documented.

Parameters

a	Operand.
b	Operand.

Returns

The value.

fix16_int32_from()

static fix16_t fix16_int32_from ( int32_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_int32_to()

static int32_t fix16_int32_to ( fix16_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_round_int32_to()

static int32_t fix16_round_int32_to ( fix16_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_integral()

static uint32_t fix16_integral ( fix16_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_fractional()

static uint32_t fix16_fractional ( fix16_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_floor()

static fix16_t fix16_floor ( fix16_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_ceil()

static fix16_t fix16_ceil ( fix16_t  value )

inlinestatic

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_overflow_add()

bool fix16_overflow_add	(	fix16_t	a,
		fix16_t	b,
		fix16_t *	sum
	)

Not yet documented.

Parameters

	a	Operand.
	b	Operand.
[out]	sum	Sum.

Returns

If overflow occurred.

fix16_overflow_sub()

bool fix16_overflow_sub	(	fix16_t	a,
		fix16_t	b,
		fix16_t *	diff
	)

Not yet documented.

Parameters

	a	Operand.
	b	Operand.
[out]	diff	Sum.

Returns

If overflow occurred.

fix16_div()

fix16_t fix16_div	(	fix16_t	dividend,
		fix16_t	divisor
	)

Not yet documented.

Parameters

dividend	Operand.
divisor	Operand.

Returns

The value.

fix16_lerp()

fix16_t fix16_lerp	(	fix16_t	a,
		fix16_t	b,
		fix16_t	t
	)

Not yet documented.

Parameters

a	Operand.
b	Operand.
t	Operand.

Returns

The value.

fix16_lerp8()

fix16_t fix16_lerp8	(	fix16_t	a,
		fix16_t	b,
		const uint8_t	t
	)

Not yet documented.

Parameters

a	Operand.
b	Operand.
t	Operand.

Returns

The value.

fix16_sqrt()

fix16_t fix16_sqrt

(

fix16_t

value

)

Not yet documented.

Parameters

value

Operand.

Returns

The value.

fix16_str()

size_t fix16_str	(	fix16_t	value,
		char *	buffer,
		int32_t	decimals
	)

Not yet documented.

Parameters

	value	Not yet documented.
[out]	buffer	Not yet documented.
	decimals	Not yet documented.

Returns

The string length, not counting the NUL character.