/* SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Copyright:
 *   2021      Zhi An Ng <zhin@google.com> (Copyright owned by Google, LLC)
 *   2023      Yi-Yen Chung <eric681@andestech.com> (Copyright owned by Andes Technology)
 */

#if !defined(SIMDE_ARM_NEON_RECPS_H)
#define SIMDE_ARM_NEON_RECPS_H

#include "dup_n.h"
#include "mls.h"
#include "types.h"

HEDLEY_DIAGNOSTIC_PUSH
SIMDE_DISABLE_UNWANTED_DIAGNOSTICS
SIMDE_BEGIN_DECLS_

SIMDE_FUNCTION_ATTRIBUTES
simde_float16_t
simde_vrecpsh_f16(simde_float16_t a, simde_float16_t b) {
  #if defined(SIMDE_ARM_NEON_A64V8_NATIVE) && defined(SIMDE_ARM_NEON_FP16)
    return vrecpsh_f16(a, b);
  #else
    return simde_float16_from_float32(SIMDE_FLOAT32_C(2.0) -
           simde_float16_to_float32(a) * simde_float16_to_float32(b));
  #endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES) || (defined(SIMDE_ENABLE_NATIVE_ALIASES) && !defined(SIMDE_ARM_NEON_FP16))
  #undef vrecpsh_f16
  #define vrecpsh_f16(a, b) simde_vrecpsh_f16((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float32_t
simde_vrecpss_f32(simde_float32_t a, simde_float32_t b) {
  #if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
    return vrecpss_f32(a, b);
  #else
    return SIMDE_FLOAT32_C(2.0) - (a * b);
  #endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
  #undef vrecpss_f32
  #define vrecpss_f32(a, b) simde_vrecpss_f32((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float64_t
simde_vrecpsd_f64(simde_float64_t a, simde_float64_t b) {
  #if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
    return vrecpsd_f64(a, b);
  #else
    return SIMDE_FLOAT64_C(2.0) - (a * b);
  #endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
  #undef vrecpsd_f64
  #define vrecpsd_f64(a, b) simde_vrecpsd_f64((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float64x1_t
simde_vrecps_f64(simde_float64x1_t a, simde_float64x1_t b) {
  #if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
    return vrecps_f64(a, b);
  #else
    return simde_vmls_f64(simde_vdup_n_f64(SIMDE_FLOAT64_C(2.0)), a, b);
  #endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
  #undef vrecps_f64
  #define vrecps_f64(a, b) simde_vrecps_f64((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float16x4_t
simde_vrecps_f16(simde_float16x4_t a, simde_float16x4_t b) {
  #if defined(SIMDE_ARM_NEON_A32V8_NATIVE) && defined(SIMDE_ARM_NEON_FP16)
    return vrecps_f16(a, b);
  #else
    simde_float16x4_private
      r_,
      a_ = simde_float16x4_to_private(a),
      b_ = simde_float16x4_to_private(b);

    SIMDE_VECTORIZE
    for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
      r_.values[i] = simde_vrecpsh_f16(a_.values[i], b_.values[i]);
    }

    return simde_float16x4_from_private(r_);
  #endif
}
#if defined(SIMDE_ARM_NEON_A32V8_ENABLE_NATIVE_ALIASES) || (defined(SIMDE_ENABLE_NATIVE_ALIASES) && !defined(SIMDE_ARM_NEON_FP16))
  #undef vrecps_f16
  #define vrecps_f16(a, b) simde_vrecps_f16((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float32x2_t
simde_vrecps_f32(simde_float32x2_t a, simde_float32x2_t b) {
  #if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
    return vrecps_f32(a, b);
  #else
    return simde_vmls_f32(simde_vdup_n_f32(SIMDE_FLOAT32_C(2.0)), a, b);
  #endif
}
#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
  #undef vrecps_f32
  #define vrecps_f32(a, b) simde_vrecps_f32((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float64x2_t
simde_vrecpsq_f64(simde_float64x2_t a, simde_float64x2_t b) {
  #if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
    return vrecpsq_f64(a, b);
  #else
    return simde_vmlsq_f64(simde_vdupq_n_f64(SIMDE_FLOAT64_C(2.0)), a, b);
  #endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
  #undef vrecpsq_f64
  #define vrecpsq_f64(a, b) simde_vrecpsq_f64((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float32x4_t
simde_vrecpsq_f32(simde_float32x4_t a, simde_float32x4_t b) {
  #if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
    return vrecpsq_f32(a, b);
  #else
    return simde_vmlsq_f32(simde_vdupq_n_f32(SIMDE_FLOAT32_C(2.0)), a, b);
  #endif
}
#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
  #undef vrecpsq_f32
  #define vrecpsq_f32(a, b) simde_vrecpsq_f32((a), (b))
#endif

SIMDE_FUNCTION_ATTRIBUTES
simde_float16x8_t
simde_vrecpsq_f16(simde_float16x8_t a, simde_float16x8_t b) {
  #if defined(SIMDE_ARM_NEON_A32V8_NATIVE) && defined(SIMDE_ARM_NEON_FP16)
    return vrecpsq_f16(a, b);
  #else
    simde_float16x8_private
      r_,
      a_ = simde_float16x8_to_private(a),
      b_ = simde_float16x8_to_private(b);

    SIMDE_VECTORIZE
    for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
      r_.values[i] = simde_vrecpsh_f16(a_.values[i], b_.values[i]);
    }

    return simde_float16x8_from_private(r_);
  #endif
}
#if defined(SIMDE_ARM_NEON_A32V8_ENABLE_NATIVE_ALIASES) || (defined(SIMDE_ENABLE_NATIVE_ALIASES) && !defined(SIMDE_ARM_NEON_FP16))
  #undef vrecpsq_f16
  #define vrecpsq_f16(a, b) simde_vrecpsq_f16((a), (b))
#endif

SIMDE_END_DECLS_
HEDLEY_DIAGNOSTIC_POP
#endif /* !defined(SIMDE_ARM_NEON_RECPS_H) */
