print_format.h

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/* Copyright (c) 2023 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_DSP_PRINT_FORMAT_H_
#define ZEPHYR_INCLUDE_DSP_PRINT_FORMAT_H_
 
#include <inttypes.h>
#include <stdlib.h>
#include <zephyr/dsp/types.h>
 
#define PRIq(precision) "s%" PRIu32 ".%0" STRINGIFY(precision) PRIu32
 
static inline int64_t ___PRIq_arg_shift(int64_t q, int shift)
{
        if (shift < 0) {
                return llabs(q) >> -shift;
        } else {
                return llabs(q) << shift;
        }
}
 
#define __EXP2(a, b) a ## b
#define __EXP(a, b) __EXP2(a ## e, b)
#define __CONSTPOW(C, x) __EXP(C, x)
 
#define __PRIq_arg_shift(q, shift)     ___PRIq_arg_shift(q, ((shift) + (8 * (4 - (int)sizeof(q)))))
#define __PRIq_arg_get(q, shift, h, l) FIELD_GET(GENMASK64(h, l), __PRIq_arg_shift(q, shift))
#define __PRIq_arg_get_int(q, shift)   __PRIq_arg_get(q, shift, 63, 31)
#define __PRIq_arg_get_frac(q, precision, shift)                                                   \
        ((__PRIq_arg_get(q, shift, 30, 0) * __CONSTPOW(1, precision)) / INT32_MAX)
 
#define PRIq_arg(q, precision, shift)                                                              \
        ((q) < 0 ? "-" : ""), (uint32_t)__PRIq_arg_get_int(q, shift),                              \
                (uint32_t)__PRIq_arg_get_frac(q, precision, shift)
 
#endif /* ZEPHYR_INCLUDE_DSP_PRINT_FORMAT_H_ */