/*
 * Public API.
 *
 * Copyright (c) 2015-2020, Arm Limited.
 * SPDX-License-Identifier: MIT
 */

#ifndef _MATHLIB_H
#define _MATHLIB_H

float expf (float);
float exp2f (float);
float logf (float);
float log2f (float);
float powf (float, float);
float sinf (float);
float cosf (float);
void sincosf (float, float*, float*);

double exp (double);
double exp2 (double);
double log (double);
double log2 (double);
double pow (double, double);

/* Scalar functions using the vector algorithm with identical result.  */
float __s_sinf (float);
float __s_cosf (float);
float __s_expf (float);
float __s_expf_1u (float);
float __s_exp2f (float);
float __s_exp2f_1u (float);
float __s_logf (float);
float __s_powf (float, float);
double __s_sin (double);
double __s_cos (double);
double __s_exp (double);
double __s_log (double);
double __s_pow (double, double);

#if __aarch64__
#if __GNUC__ >= 5
typedef __Float32x4_t __f32x4_t;
typedef __Float64x2_t __f64x2_t;
#elif __clang_major__*100+__clang_minor__ >= 305
typedef __attribute__((__neon_vector_type__(4))) float __f32x4_t;
typedef __attribute__((__neon_vector_type__(2))) double __f64x2_t;
#else
#error Unsupported compiler
#endif

/* Vector functions following the base PCS.  */
__f32x4_t __v_sinf (__f32x4_t);
__f32x4_t __v_cosf (__f32x4_t);
__f32x4_t __v_expf (__f32x4_t);
__f32x4_t __v_expf_1u (__f32x4_t);
__f32x4_t __v_exp2f (__f32x4_t);
__f32x4_t __v_exp2f_1u (__f32x4_t);
__f32x4_t __v_logf (__f32x4_t);
__f32x4_t __v_powf (__f32x4_t, __f32x4_t);
__f64x2_t __v_sin (__f64x2_t);
__f64x2_t __v_cos (__f64x2_t);
__f64x2_t __v_exp (__f64x2_t);
__f64x2_t __v_log (__f64x2_t);
__f64x2_t __v_pow (__f64x2_t, __f64x2_t);

#if __GNUC__ >= 9 || __clang_major__ >= 8
#define __vpcs __attribute__((__aarch64_vector_pcs__))

/* Vector functions following the vector PCS.  */
__vpcs __f32x4_t __vn_sinf (__f32x4_t);
__vpcs __f32x4_t __vn_cosf (__f32x4_t);
__vpcs __f32x4_t __vn_expf (__f32x4_t);
__vpcs __f32x4_t __vn_expf_1u (__f32x4_t);
__vpcs __f32x4_t __vn_exp2f (__f32x4_t);
__vpcs __f32x4_t __vn_exp2f_1u (__f32x4_t);
__vpcs __f32x4_t __vn_logf (__f32x4_t);
__vpcs __f32x4_t __vn_powf (__f32x4_t, __f32x4_t);
__vpcs __f64x2_t __vn_sin (__f64x2_t);
__vpcs __f64x2_t __vn_cos (__f64x2_t);
__vpcs __f64x2_t __vn_exp (__f64x2_t);
__vpcs __f64x2_t __vn_log (__f64x2_t);
__vpcs __f64x2_t __vn_pow (__f64x2_t, __f64x2_t);

/* Vector functions following the vector PCS using ABI names.  */
__vpcs __f32x4_t _ZGVnN4v_sinf (__f32x4_t);
__vpcs __f32x4_t _ZGVnN4v_cosf (__f32x4_t);
__vpcs __f32x4_t _ZGVnN4v_expf (__f32x4_t);
__vpcs __f32x4_t _ZGVnN4v_exp2f (__f32x4_t);
__vpcs __f32x4_t _ZGVnN4v_logf (__f32x4_t);
__vpcs __f32x4_t _ZGVnN4vv_powf (__f32x4_t, __f32x4_t);
__vpcs __f64x2_t _ZGVnN2v_sin (__f64x2_t);
__vpcs __f64x2_t _ZGVnN2v_cos (__f64x2_t);
__vpcs __f64x2_t _ZGVnN2v_exp (__f64x2_t);
__vpcs __f64x2_t _ZGVnN2v_log (__f64x2_t);
__vpcs __f64x2_t _ZGVnN2vv_pow (__f64x2_t, __f64x2_t);
#endif
#endif

#endif