decay.h File Reference

utility method for decaying a value by a given amount More...

#include <common/maths-util.h>
#include <common/neuron-typedefs.h>

Go to the source code of this file.

Macros
#define	decay(x, d)
	This is a type-generic decay "function". More...

Typedefs
typedef UFRACT	decay_t

Functions
static s1615	decay_s1615 (s1615 x, decay_t decay)
	this method takes a s1615 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)). More...
static u1616	decay_u1616 (u1616 x, decay_t decay)
	this method takes a s1616 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)). More...
static s015	decay_s015 (s015 x, decay_t decay)
	this method takes a s015 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)). More...
static u016	decay_u016 (u016 x, decay_t decay)
	this method takes a s016 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)). More...
static u032	decay_s1615_to_u032 (s1615 x, decay_t decay)

Detailed Description

utility method for decaying a value by a given amount

The API includes:

• decay_s1615() decays a s1615 value x by a given decay amount
• decay_u1616() decays a u1616 value x by a given decay amount
• decay_s015() decays a s015 value x by a given decay amount
• decay_u016() decays a u016 value x by a given decay amount
• decay() is suppose to deduce the x value's type and call one of the above methods to decay it by a given decay amount.

Definition in file decay.h.

Macro Definition Documentation

decay

#define decay	(		x,
			d
	)

Value:

    ({ \
    __typeof__(x) tmp = (x); \
    if (__builtin_types_compatible_p(__typeof__(x), s1615)) {\
        tmp = decay_s1615(x, d); \
    } else if (__builtin_types_compatible_p(__typeof__(x), u1616)) {\
        tmp = decay_u1616(x, d); \
    } else if (__builtin_types_compatible_p(__typeof__(x), s015)) {\
        tmp = decay_s015(x, d); \
    } else if (__builtin_types_compatible_p(__typeof__(x), u016)) {\
        tmp = decay_u016(x, d); \
    } else {\
        abort(1); \
    }\
    tmp; \
})

This is a type-generic decay "function".

Parameters

[in]	x	the value to decayed
[in]	d	the amount to decay the value by

Returns

the new decayed value

Definition at line 118 of file decay.h.

Typedef Documentation

decay_t

typedef UFRACT decay_t

this is a redefine of the ufract into a decay for easier conversions in the future if the type is redefined

Definition at line 44 of file decay.h.

Function Documentation

decay_s1615()

static s1615 decay_s1615 ( s1615  x, decay_t  decay  )

inlinestatic

this method takes a s1615 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)).

Parameters

[in]	x	the s1615 value to decayed
[in]	decay	the amount to decay the value by

Returns

the new decayed s1615 value

Definition at line 52 of file decay.h.

decay_u1616()

static u1616 decay_u1616 ( u1616  x, decay_t  decay  )

inlinestatic

this method takes a s1616 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)).

Parameters

[in]	x	the s1616 value to decayed
[in]	decay	the amount to decay the value by

Returns

the new decayed s1616 value

Definition at line 65 of file decay.h.

decay_s015()

static s015 decay_s015 ( s015  x, decay_t  decay  )

inlinestatic

this method takes a s015 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)).

Parameters

[in]	x	the s015 value to decayed
[in]	decay	the amount to decay the value by

Returns

the new decayed s015 value

Definition at line 78 of file decay.h.

decay_u016()

static u016 decay_u016 ( u016  x, decay_t  decay  )

inlinestatic

this method takes a s016 and decays it by a given amount (denoted by the decay) (to compensate for the valve behaviour of a synapse in biology (spike goes in, synapse opens, then closes slowly)).

Parameters

[in]	x	the s016 value to decayed
[in]	decay	the amount to decay the value by

Returns

the new decayed s016 value

Definition at line 91 of file decay.h.