divider.h File Reference

#include "pico.h"

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Macros
#define	PICO_EMULATE_DIVIDER   1

Typedefs
typedef uint64_t	divmod_result_t
typedef uint64_t	hw_divider_state_t

Functions
static int	__sign_of (int32_t v)
static divmod_result_t	hw_divider_divmod_s32 (int32_t a, int32_t b)
	Do a signed HW divide and wait for result.
static divmod_result_t	hw_divider_divmod_u32 (uint32_t a, uint32_t b)
	Do an unsigned HW divide and wait for result.
static void	hw_divider_divmod_s32_start (int32_t a, int32_t b)
	Start a signed asynchronous divide.
static void	hw_divider_divmod_u32_start (uint32_t a, uint32_t b)
	Start an unsigned asynchronous divide.
static void	hw_divider_wait_ready (void)
	Wait for a divide to complete.
static divmod_result_t	hw_divider_result_nowait (void)
	Return result of HW divide, nowait.
static divmod_result_t	hw_divider_result_wait (void)
	Return result of last asynchronous HW divide.
static uint32_t	to_quotient_u32 (divmod_result_t r)
	Efficient extraction of unsigned quotient from 32p32 fixed point.
static int32_t	to_quotient_s32 (divmod_result_t r)
	Efficient extraction of signed quotient from 32p32 fixed point.
static uint32_t	to_remainder_u32 (divmod_result_t r)
	Efficient extraction of unsigned remainder from 32p32 fixed point.
static int32_t	to_remainder_s32 (divmod_result_t r)
	Efficient extraction of signed remainder from 32p32 fixed point.
static uint32_t	hw_divider_u32_quotient_wait (void)
	Return result of last asynchronous HW divide, unsigned quotient only.
static int32_t	hw_divider_s32_quotient_wait (void)
	Return result of last asynchronous HW divide, signed quotient only.
static uint32_t	hw_divider_u32_remainder_wait (void)
	Return result of last asynchronous HW divide, unsigned remainder only.
static int32_t	hw_divider_s32_remainder_wait (void)
	Return result of last asynchronous HW divide, signed remainder only.
static uint32_t	hw_divider_u32_quotient (uint32_t a, uint32_t b)
	Do an unsigned HW divide, wait for result, return quotient.
static uint32_t	hw_divider_u32_remainder (uint32_t a, uint32_t b)
	Do an unsigned HW divide, wait for result, return remainder.
static int32_t	hw_divider_quotient_s32 (int32_t a, int32_t b)
	Do a signed HW divide, wait for result, return quotient.
static int32_t	hw_divider_remainder_s32 (int32_t a, int32_t b)
	Do a signed HW divide, wait for result, return remainder.
static void	hw_divider_pause (void)
	Pause for exact amount of time needed for a asynchronous divide to complete.
static uint32_t	hw_divider_u32_quotient_inlined (uint32_t a, uint32_t b)
	Do a hardware unsigned HW divide, wait for result, return quotient.
static uint32_t	hw_divider_u32_remainder_inlined (uint32_t a, uint32_t b)
	Do a hardware unsigned HW divide, wait for result, return remainder.
static int32_t	hw_divider_s32_quotient_inlined (int32_t a, int32_t b)
	Do a hardware signed HW divide, wait for result, return quotient.
static int32_t	hw_divider_s32_remainder_inlined (int32_t a, int32_t b)
	Do a hardware signed HW divide, wait for result, return remainder.
static void	hw_divider_save_state (hw_divider_state_t *dest)
	Save the calling cores hardware divider state.
static void	hw_divider_restore_state (hw_divider_state_t *src)
	Load a saved hardware divider state into the current core's hardware divider.

Variables
divmod_result_t	hw_divider_results [NUM_CORES]