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/* 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:
* 2020 Evan Nemerson <evan@nemerson.com>
* 2021 Zhi An Ng <zhin@google.com> (Copyright owned by Google, LLC)
*/
#if !defined(SIMDE_ARM_NEON_RECPE_H)
#define SIMDE_ARM_NEON_RECPE_H
#include "types.h"
HEDLEY_DIAGNOSTIC_PUSH
SIMDE_DISABLE_UNWANTED_DIAGNOSTICS
SIMDE_BEGIN_DECLS_
SIMDE_FUNCTION_ATTRIBUTES
simde_float32_t
simde_vrecpes_f32(simde_float32_t a) {
#if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
return vrecpes_f32(a);
#else
return SIMDE_FLOAT32_C(1.0) / a;
#endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
#undef vrecpes_f32
#define vrecpes_f32(a) simde_vrecpes_f32((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_float64_t
simde_vrecped_f64(simde_float64_t a) {
#if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
return vrecped_f64(a);
#else
return SIMDE_FLOAT64_C(1.0) / a;
#endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
#undef vrecped_f64
#define vrecped_f64(a) simde_vrecped_f64((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_float32x2_t
simde_vrecpe_f32(simde_float32x2_t a) {
#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
return vrecpe_f32(a);
#else
simde_float32x2_private
r_,
a_ = simde_float32x2_to_private(a);
#if defined(SIMDE_IEEE754_STORAGE)
SIMDE_VECTORIZE
for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
int32_t ix;
simde_float32 fx = a_.values[i];
simde_memcpy(&ix, &fx, sizeof(ix));
int32_t x = INT32_C(0x7EF311C3) - ix;
simde_float32 temp;
simde_memcpy(&temp, &x, sizeof(temp));
r_.values[i] = temp * (SIMDE_FLOAT32_C(2.0) - temp * fx);
}
#elif defined(SIMDE_VECTOR_SUBSCRIPT_SCALAR)
r_.f32 = 1.0f / a_.f32;
#else
SIMDE_VECTORIZE
for (size_t i = 0 ; i < (sizeof(r_.f32) / sizeof(r_.f32[0])) ; i++) {
r_.values[i] = simde_vrecpes_f32(a_.values[i]);
}
#endif
return simde_float32x2_from_private(r_);
#endif
}
#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
#undef vrecpe_f32
#define vrecpe_f32(a) simde_vrecpe_f32((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_float64x1_t
simde_vrecpe_f64(simde_float64x1_t a) {
#if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
return vrecpe_f64(a);
#else
simde_float64x1_private
r_,
a_ = simde_float64x1_to_private(a);
#if defined(SIMDE_VECTOR_SUBSCRIPT_SCALAR)
r_.values = 1.0 / a_.values;
#else
SIMDE_VECTORIZE
for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
r_.values[i] = simde_vrecped_f64(a_.values[i]);
}
#endif
return simde_float64x1_from_private(r_);
#endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
#undef vrecpe_f64
#define vrecpe_f64(a) simde_vrecpe_f64((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_float64x2_t
simde_vrecpeq_f64(simde_float64x2_t a) {
#if defined(SIMDE_ARM_NEON_A64V8_NATIVE)
return vrecpeq_f64(a);
#else
simde_float64x2_private
r_,
a_ = simde_float64x2_to_private(a);
#if defined(SIMDE_VECTOR_SUBSCRIPT_SCALAR)
r_.values = 1.0 / a_.values;
#else
SIMDE_VECTORIZE
for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
r_.values[i] = simde_vrecped_f64(a_.values[i]);
}
#endif
return simde_float64x2_from_private(r_);
#endif
}
#if defined(SIMDE_ARM_NEON_A64V8_ENABLE_NATIVE_ALIASES)
#undef vrecpeq_f64
#define vrecpeq_f64(a) simde_vrecpeq_f64((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_float32x4_t
simde_vrecpeq_f32(simde_float32x4_t a) {
#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
return vrecpeq_f32(a);
#elif defined(SIMDE_POWER_ALTIVEC_P6_NATIVE)
return vec_re(a);
#else
simde_float32x4_private
r_,
a_ = simde_float32x4_to_private(a);
#if defined(SIMDE_X86_SSE_NATIVE)
r_.m128 = _mm_rcp_ps(a_.m128);
#elif defined(SIMDE_IEEE754_STORAGE)
SIMDE_VECTORIZE
for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
int32_t ix;
simde_float32 fx = a_.values[i];
simde_memcpy(&ix, &fx, sizeof(ix));
int32_t x = INT32_C(0x7EF311C3) - ix;
simde_float32 temp;
simde_memcpy(&temp, &x, sizeof(temp));
r_.values[i] = temp * (SIMDE_FLOAT32_C(2.0) - temp * fx);
}
#elif defined(SIMDE_VECTOR_SUBSCRIPT_SCALAR)
r_.f32 = 1.0f / a_.f32;
#else
SIMDE_VECTORIZE
for (size_t i = 0 ; i < (sizeof(r_.f32) / sizeof(r_.f32[0])) ; i++) {
r_.values[i] = simde_vrecpes_f32(a_.values[i]);
}
#endif
return simde_float32x4_from_private(r_);
#endif
}
#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
#undef vrecpeq_f32
#define vrecpeq_f32(a) simde_vrecpeq_f32((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_uint32x2_t
simde_vrecpe_u32(simde_uint32x2_t a){
#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
return vrecpe_u32(a);
#else
simde_uint32x2_private
a_ = simde_uint32x2_to_private(a),
r_;
SIMDE_VECTORIZE
for(size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
if(a_.values[i] <= 0x7FFFFFFF){
r_.values[i] = UINT32_MAX;
} else {
uint32_t a_temp = (a_.values[i] >> 23) & 511;
a_temp = a_temp * 2 + 1;
uint32_t b = (1 << 19) / a_temp;
r_.values[i] = (b+1) / 2;
r_.values[i] = r_.values[i] << 23;
}
}
return simde_uint32x2_from_private(r_);
#endif
}
#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
#undef vrecpe_u32
#define vrecpe_u32(a) simde_vrecpe_u32((a))
#endif
SIMDE_FUNCTION_ATTRIBUTES
simde_uint32x4_t
simde_vrecpeq_u32(simde_uint32x4_t a){
#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
return vrecpeq_u32(a);
#else
simde_uint32x4_private
a_ = simde_uint32x4_to_private(a),
r_;
SIMDE_VECTORIZE
for(size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
if(a_.values[i] <= 0x7FFFFFFF){
r_.values[i] = UINT32_MAX;
} else {
uint32_t a_temp = (a_.values[i] >> 23) & 511;
a_temp = a_temp * 2 + 1;
uint32_t b = (1 << 19) / a_temp;
r_.values[i] = (b+1) / 2;
r_.values[i] = r_.values[i] << 23;
}
}
return simde_uint32x4_from_private(r_);
#endif
}
#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
#undef vrecpeq_u32
#define vrecpeq_u32(a) simde_vrecpeq_u32((a))
#endif
SIMDE_END_DECLS_
HEDLEY_DIAGNOSTIC_POP
#endif /* !defined(SIMDE_ARM_NEON_RECPE_H) */