qpset.h File Reference

platform-independent priority sets of 8 or 64 elements. More...

Go to the source code of this file.

Classes
class	QPSet8
	Priority Set of up to 8 elements for building various schedulers, but also useful as a general set of up to 8 elements of any kind. More...
class	QPSet64
	Priority Set of up to 64 elements for building various schedulers, but also useful as a general set of up to 64 elements of any kind. More...
Variables
uint8_t const Q_ROM Q_ROM_VAR	QF_log2Lkup [256]
	Lookup table for (log2(n) + 1), where n is the index into the table.
uint8_t const Q_ROM Q_ROM_VAR	QF_pwr2Lkup [65]
	Lookup table for (1 << ((n-1) % 8)), where n is the index into the table.
uint8_t const Q_ROM Q_ROM_VAR	QF_invPwr2Lkup [65]
	Lookup table for ~(1 << ((n-1) % 8)), where n is the index into the table.
uint8_t const Q_ROM Q_ROM_VAR	QF_div8Lkup [65]
	Lookup table for (n-1)/8.

---

Detailed Description

platform-independent priority sets of 8 or 64 elements.

This header file must be included in those QF ports that use the cooperative multitasking QF scheduler or the QK.

Definition in file qpset.h.

---

Variable Documentation

uint8_t const Q_ROM Q_ROM_VAR QF_div8Lkup[65]

Lookup table for (n-1)/8.

Note:

Index range n = 0..64. The first index (n == 0) should never be used.

Definition at line 63 of file qf_pwr2.cpp.

uint8_t const Q_ROM Q_ROM_VAR QF_invPwr2Lkup[65]

Lookup table for ~(1 << ((n-1) % 8)), where n is the index into the table.

Note:

Index range n = 0..64. The first index (n == 0) should never be used.

Definition at line 51 of file qf_pwr2.cpp.

uint8_t const Q_ROM Q_ROM_VAR QF_log2Lkup[256]

Lookup table for (log2(n) + 1), where n is the index into the table.

This lookup delivers the 1-based number of the most significant 1-bit of a byte.

Note:

Index range n = 0..255. The first index (n == 0) should never be used.

Definition at line 39 of file qf_log2.cpp.

uint8_t const Q_ROM Q_ROM_VAR QF_pwr2Lkup[65]

Lookup table for (1 << ((n-1) % 8)), where n is the index into the table.

Note:

Index range n = 0..64. The first index (n == 0) should never be used.

Definition at line 39 of file qf_pwr2.cpp.