/*******************************************************************************
* Copyright 2017-2019 Intel Corporation
*
* 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
*
*     http://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.
*******************************************************************************/

#include <float.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "dnnl.h"

#include "dnnl_common.hpp"

#include "conv/conv_common.hpp"

namespace conv {

/* cfgs definition
 * arrays: SRC, WEI, BIA, DST, ACC
 * params: {data_type, min, max, f_min, f_max, f_base, f_step, f_sparsity, eps}
 */

const int int_max_exact_half = 1 << 11;
const _dt_conf_t conf_f16 = {
        {dnnl_f16, -int_max_exact_half, int_max_exact_half, -4, 4, 0, 1, .25,
                0.},
        {dnnl_f16, -int_max_exact_half, int_max_exact_half, -2, 2, -2, 1, 1.0,
                0.},
        {dnnl_f16, -int_max_exact_half, int_max_exact_half, -8, 8, 0, 1, 1.0,
                0.},
        {dnnl_f16, -int_max_exact_half, int_max_exact_half, -4, 4, 0, 1, .25,
                0.},
        {
                dnnl_f16,
        },
};

const int int_max_exact = 1 << 24;
const _dt_conf_t conf_f32 = {
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .25, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, 1.0, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -512, 512, 0, 1, 1.0, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .25, 0.},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_f32_no_limits = {
        {dnnl_f32, -FLT_MAX, FLT_MAX, -32, 32, 0, 1, .25, 0.},
        {dnnl_f32, -FLT_MAX, FLT_MAX, -32, 32, 0, 1, 1.0, 0.},
        {dnnl_f32, -FLT_MAX, FLT_MAX, -512, 512, 0, 1, 1.0, 0.},
        {dnnl_f32, -FLT_MAX, FLT_MAX, -32, 32, 0, 1, .25, 0.},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_f32_full = {
        {dnnl_f32, -int_max_exact, int_max_exact, -64, 64, 0, 1, 1.0, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, 1.0, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -512, 512, 0, 1, 1.0, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -64, 64, 0, 1, 1.0, 0.},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_f32_wino = {
        {dnnl_f32, -FLT_MAX, FLT_MAX, -16, 128, 3, 1, .25, 1e-5},
        {dnnl_f32, -FLT_MAX, FLT_MAX, 2, 64, 2, 1, .75, 6e-6},
        {dnnl_f32, -FLT_MAX, FLT_MAX, 1, 128, 1, 1, .25, 2e-7},
        {dnnl_f32, -FLT_MAX, FLT_MAX, -16, 128, 3, 1, .25, 2e-5},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_bf16bf16f32 = {
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_bf16bf16bf16 = {
        /* eps is 1e-2 because of loss in precision of
     * output when converted from fp32 to bf16.
     * DNNL output is compared against reference computed in fp32.*/
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 1e-2},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 1e-2},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 1e-2},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 1e-2},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_f32bf16bf16 = {
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_bf16f32bf16 = {
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_f32, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {dnnl_bf16, -int_max_exact, int_max_exact, -32, 32, 0, 1, .75, 0.},
        {
                dnnl_f32,
        },
};

const _dt_conf_t conf_u8s8f32 = {
        {dnnl_u8, 0, UINT8_MAX, 0, 8, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -255, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8s32 = {
        {dnnl_u8, 0, UINT8_MAX, 0, 8, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_s32, INT32_MIN, INT32_MAX, -255, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8s8 = {
        {dnnl_u8, 0, UINT8_MAX, 0, 8, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -127, 127, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8u8 = {
        {dnnl_u8, 0, UINT8_MAX, 0, 8, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_u8, 0, UINT8_MAX, 0, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_s8s8f32 = {
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -8, 3, 0, 4, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -255, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_s8s8s32 = {
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -8, 3, 0, 4, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_s32, INT32_MIN, INT32_MAX, -255, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_s8s8s8 = {
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -8, 3, 0, 4, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -127, 127, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_s8s8u8 = {
        {dnnl_s8, INT8_MIN, INT8_MAX, -5, 5, 0, 1, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -8, 3, 0, 4, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -8, 32, 0, 1, .25, 0.},
        {dnnl_u8, 0, UINT8_MAX, 0, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8f32_wino = {
        {dnnl_u8, 0, UINT8_MAX, 0, 239, 0, 4, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -72, 71, 0, 9, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -9, 35, 0, 9, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -255, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8s32_wino = {
        {dnnl_u8, 0, UINT8_MAX, 0, 239, 0, 4, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -72, 71, 0, 9, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -9, 35, 0, 9, .25, 0.},
        {dnnl_s32, INT32_MIN, INT32_MAX, -255, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8s8_wino = {
        {dnnl_u8, 0, UINT8_MAX, 0, 239, 0, 4, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -72, 71, 0, 9, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -9, 35, 0, 9, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -127, 127, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const _dt_conf_t conf_u8s8u8_wino = {
        {dnnl_u8, 0, UINT8_MAX, 0, 239, 0, 4, .25, 0.},
        {dnnl_s8, INT8_MIN, INT8_MAX, -72, 71, 0, 9, .25, 0.},
        {dnnl_f32, INT32_MIN, INT32_MAX, -9, 35, 0, 9, .25, 0.},
        {dnnl_u8, 0, UINT8_MAX, 0, 255, 0, 1, .25, 0.},
        {
                dnnl_s32,
        },
};

const dt_conf_t *str2cfg(const char *str) {
#define CASE(cfg) \
    if (!strcasecmp(STRINGIFY(cfg), str)) return CONCAT2(conf_, cfg)
    CASE(f16);
    CASE(f32);
    CASE(f32_no_limits);
    CASE(f32_full);
    CASE(f32_wino);
    CASE(u8s8f32);
    CASE(u8s8s32);
    CASE(u8s8s8);
    CASE(u8s8u8);
    CASE(s8s8f32);
    CASE(s8s8s32);
    CASE(s8s8s8);
    CASE(s8s8u8);
    CASE(u8s8f32_wino);
    CASE(u8s8s32_wino);
    CASE(u8s8s8_wino);
    CASE(u8s8u8_wino);
    CASE(bf16bf16f32);
    CASE(bf16bf16bf16);
    CASE(f32bf16bf16);
    CASE(bf16f32bf16);
#undef CASE
    []() {
        SAFE(FAIL, CRIT);
        return 0;
    }();
    return (const dt_conf_t *)1;
}

const char *cfg2str(const dt_conf_t *cfg) {
#define CASE(_cfg) \
    if (cfg == CONCAT2(conf_, _cfg)) return STRINGIFY(_cfg)
    CASE(f16);
    CASE(f32);
    CASE(f32_no_limits);
    CASE(f32_full);
    CASE(f32_wino);
    CASE(u8s8f32);
    CASE(u8s8s32);
    CASE(u8s8s8);
    CASE(u8s8u8);
    CASE(s8s8f32);
    CASE(s8s8s32);
    CASE(s8s8s8);
    CASE(s8s8u8);
    CASE(u8s8f32_wino);
    CASE(u8s8s32_wino);
    CASE(u8s8s8_wino);
    CASE(u8s8u8_wino);
    CASE(bf16bf16f32);
    CASE(bf16bf16bf16);
    CASE(f32bf16bf16);
    CASE(bf16f32bf16);
#undef CASE
    []() {
        SAFE(FAIL, CRIT);
        return 0;
    }();
    return NULL;
}

const dt_conf_t *auto_cfg(const alg_t alg, const dt_conf_t *cfg) {
    const char *cfg_s = cfg2str(cfg);
#define CASE(_cfg_) \
    if (alg == WINO && !strcmp(cfg_s, STRINGIFY(_cfg_))) \
    return CONCAT2(conf_, CONCAT2(_cfg_, _wino))
    CASE(f32);
    CASE(u8s8f32);
    CASE(u8s8s32);
    CASE(u8s8s8);
    CASE(u8s8u8);
#undef CASE
    return cfg;
}

} // namespace conv
