stdp_typedefs.h

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/*
 * Copyright (c) 2014 The University of Manchester
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _STDP_TYPEDEFS_H_
#define _STDP_TYPEDEFS_H_
 
//---------------------------------------
// Macros
//---------------------------------------
// Fixed-point number system used STDP
#define STDP_FIXED_POINT 11
#define STDP_FIXED_POINT_ONE    (1 << STDP_FIXED_POINT)
 
// Helper macros for 16-bit fixed-point multiplication
#define STDP_FIXED_MUL_16X16(a, b) maths_fixed_mul16(a, b, STDP_FIXED_POINT)
 
#define S1615_TO_STDP_RIGHT_SHIFT 4
 
static inline accum mul_accum_fixed(accum a, int32_t stdp_fixed) {
    return a * kbits(stdp_fixed << S1615_TO_STDP_RIGHT_SHIFT);
}
 
#endif  // _STDP_TYPEDEFS_H_