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//===-- Utils which wrap MPC ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "MPCUtils.h"
#include "src/__support/CPP/array.h"
#include "src/__support/CPP/stringstream.h"
#include "utils/MPCWrapper/mpc_inc.h"
#include "utils/MPFRWrapper/MPCommon.h"
#include <stdint.h>
template <typename T> using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
namespace LIBC_NAMESPACE_DECL {
namespace testing {
namespace mpc {
static inline cpp::string str(RoundingMode mode) {
switch (mode) {
case RoundingMode::Upward:
return "MPFR_RNDU";
case RoundingMode::Downward:
return "MPFR_RNDD";
case RoundingMode::TowardZero:
return "MPFR_RNDZ";
case RoundingMode::Nearest:
return "MPFR_RNDN";
}
}
class MPCNumber {
private:
unsigned int precision;
mpc_t value;
mpc_rnd_t mpc_rounding;
public:
explicit MPCNumber(unsigned int p) : precision(p), mpc_rounding(MPC_RNDNN) {
mpc_init2(value, precision);
}
MPCNumber() : precision(256), mpc_rounding(MPC_RNDNN) {
mpc_init2(value, 256);
}
MPCNumber(unsigned int p, mpc_rnd_t rnd) : precision(p), mpc_rounding(rnd) {
mpc_init2(value, precision);
}
template <typename XType,
cpp::enable_if_t<cpp::is_same_v<_Complex float, XType>, bool> = 0>
MPCNumber(XType x,
unsigned int precision = mpfr::ExtraPrecision<float>::VALUE,
RoundingMode rnd = RoundingMode::Nearest)
: precision(precision),
mpc_rounding(MPC_RND(mpfr::get_mpfr_rounding_mode(rnd),
mpfr::get_mpfr_rounding_mode(rnd))) {
mpc_init2(value, precision);
Complex<float> x_c = cpp::bit_cast<Complex<float>>(x);
mpfr_t real, imag;
mpfr_init2(real, precision);
mpfr_init2(imag, precision);
mpfr_set_flt(real, x_c.real, mpfr::get_mpfr_rounding_mode(rnd));
mpfr_set_flt(imag, x_c.imag, mpfr::get_mpfr_rounding_mode(rnd));
mpc_set_fr_fr(value, real, imag, mpc_rounding);
mpfr_clear(real);
mpfr_clear(imag);
}
template <typename XType,
cpp::enable_if_t<cpp::is_same_v<_Complex double, XType>, bool> = 0>
MPCNumber(XType x,
unsigned int precision = mpfr::ExtraPrecision<double>::VALUE,
RoundingMode rnd = RoundingMode::Nearest)
: precision(precision),
mpc_rounding(MPC_RND(mpfr::get_mpfr_rounding_mode(rnd),
mpfr::get_mpfr_rounding_mode(rnd))) {
mpc_init2(value, precision);
Complex<double> x_c = cpp::bit_cast<Complex<double>>(x);
mpc_set_d_d(value, x_c.real, x_c.imag, mpc_rounding);
}
MPCNumber(const MPCNumber &other)
: precision(other.precision), mpc_rounding(other.mpc_rounding) {
mpc_init2(value, precision);
mpc_set(value, other.value, mpc_rounding);
}
~MPCNumber() { mpc_clear(value); }
MPCNumber &operator=(const MPCNumber &rhs) {
precision = rhs.precision;
mpc_rounding = rhs.mpc_rounding;
mpc_init2(value, precision);
mpc_set(value, rhs.value, mpc_rounding);
return *this;
}
void setValue(mpc_t val) const { mpc_set(val, value, mpc_rounding); }
mpc_t &getValue() { return value; }
MPCNumber carg() const {
mpfr_t res;
MPCNumber result(precision, mpc_rounding);
mpfr_init2(res, precision);
mpc_arg(res, value, MPC_RND_RE(mpc_rounding));
mpc_set_fr(result.value, res, mpc_rounding);
mpfr_clear(res);
return result;
}
MPCNumber cproj() const {
MPCNumber result(precision, mpc_rounding);
mpc_proj(result.value, value, mpc_rounding);
return result;
}
};
namespace internal {
template <typename InputType>
cpp::enable_if_t<cpp::is_complex_v<InputType>, MPCNumber>
unary_operation(Operation op, InputType input, unsigned int precision,
RoundingMode rounding) {
MPCNumber mpcInput(input, precision, rounding);
switch (op) {
case Operation::Carg:
return mpcInput.carg();
case Operation::Cproj:
return mpcInput.cproj();
default:
__builtin_unreachable();
}
}
template <typename InputType, typename OutputType>
bool compare_unary_operation_single_output_same_type(Operation op,
InputType input,
OutputType libc_result,
double ulp_tolerance,
RoundingMode rounding) {
unsigned int precision =
mpfr::get_precision<make_real_t<InputType>>(ulp_tolerance);
MPCNumber mpc_result;
mpc_result = unary_operation(op, input, precision, rounding);
mpc_t mpc_result_val;
mpc_init2(mpc_result_val, precision);
mpc_result.setValue(mpc_result_val);
mpfr_t real, imag;
mpfr_init2(real, precision);
mpfr_init2(imag, precision);
mpc_real(real, mpc_result_val, mpfr::get_mpfr_rounding_mode(rounding));
mpc_imag(imag, mpc_result_val, mpfr::get_mpfr_rounding_mode(rounding));
mpfr::MPFRNumber mpfr_real(real, precision, rounding);
mpfr::MPFRNumber mpfr_imag(imag, precision, rounding);
double ulp_real = mpfr_real.ulp(
(cpp::bit_cast<Complex<make_real_t<InputType>>>(libc_result)).real);
double ulp_imag = mpfr_imag.ulp(
(cpp::bit_cast<Complex<make_real_t<InputType>>>(libc_result)).imag);
mpc_clear(mpc_result_val);
mpfr_clear(real);
mpfr_clear(imag);
return (ulp_real <= ulp_tolerance) && (ulp_imag <= ulp_tolerance);
}
template bool compare_unary_operation_single_output_same_type(
Operation, _Complex float, _Complex float, double, RoundingMode);
template bool compare_unary_operation_single_output_same_type(
Operation, _Complex double, _Complex double, double, RoundingMode);
template <typename InputType, typename OutputType>
bool compare_unary_operation_single_output_different_type(
Operation op, InputType input, OutputType libc_result, double ulp_tolerance,
RoundingMode rounding) {
unsigned int precision =
mpfr::get_precision<make_real_t<InputType>>(ulp_tolerance);
MPCNumber mpc_result;
mpc_result = unary_operation(op, input, precision, rounding);
mpc_t mpc_result_val;
mpc_init2(mpc_result_val, precision);
mpc_result.setValue(mpc_result_val);
mpfr_t real;
mpfr_init2(real, precision);
mpc_real(real, mpc_result_val, mpfr::get_mpfr_rounding_mode(rounding));
mpfr::MPFRNumber mpfr_real(real, precision, rounding);
double ulp_real = mpfr_real.ulp(libc_result);
mpc_clear(mpc_result_val);
mpfr_clear(real);
return (ulp_real <= ulp_tolerance);
}
template bool compare_unary_operation_single_output_different_type(
Operation, _Complex float, float, double, RoundingMode);
template bool compare_unary_operation_single_output_different_type(
Operation, _Complex double, double, double, RoundingMode);
template <typename InputType, typename OutputType>
void explain_unary_operation_single_output_different_type_error(
Operation op, InputType input, OutputType libc_result, double ulp_tolerance,
RoundingMode rounding) {
unsigned int precision =
mpfr::get_precision<make_real_t<InputType>>(ulp_tolerance);
MPCNumber mpc_result;
mpc_result = unary_operation(op, input, precision, rounding);
mpc_t mpc_result_val;
mpc_init2(mpc_result_val, precision);
mpc_result.setValue(mpc_result_val);
mpfr_t real;
mpfr_init2(real, precision);
mpc_real(real, mpc_result_val, mpfr::get_mpfr_rounding_mode(rounding));
mpfr::MPFRNumber mpfr_result(real, precision, rounding);
mpfr::MPFRNumber mpfrLibcResult(libc_result, precision, rounding);
mpfr::MPFRNumber mpfrInputReal(
cpp::bit_cast<Complex<make_real_t<InputType>>>(input).real, precision,
rounding);
mpfr::MPFRNumber mpfrInputImag(
cpp::bit_cast<Complex<make_real_t<InputType>>>(input).imag, precision,
rounding);
cpp::array<char, 2048> msg_buf;
cpp::StringStream msg(msg_buf);
msg << "Match value not within tolerance value of MPFR result:\n"
<< " Input: " << mpfrInputReal.str() << " + " << mpfrInputImag.str()
<< "i\n"
<< " Rounding mode: " << str(rounding) << '\n'
<< " Libc: " << mpfrLibcResult.str() << '\n'
<< " MPC: " << mpfr_result.str() << '\n'
<< '\n'
<< " ULP error: " << mpfr_result.ulp_as_mpfr_number(libc_result).str()
<< '\n';
tlog << msg.str();
mpc_clear(mpc_result_val);
mpfr_clear(real);
}
template void explain_unary_operation_single_output_different_type_error(
Operation, _Complex float, float, double, RoundingMode);
template void explain_unary_operation_single_output_different_type_error(
Operation, _Complex double, double, double, RoundingMode);
template <typename InputType, typename OutputType>
void explain_unary_operation_single_output_same_type_error(
Operation op, InputType input, OutputType libc_result, double ulp_tolerance,
RoundingMode rounding) {
unsigned int precision =
mpfr::get_precision<make_real_t<InputType>>(ulp_tolerance);
MPCNumber mpc_result;
mpc_result = unary_operation(op, input, precision, rounding);
mpc_t mpc_result_val;
mpc_init2(mpc_result_val, precision);
mpc_result.setValue(mpc_result_val);
mpfr_t real, imag;
mpfr_init2(real, precision);
mpfr_init2(imag, precision);
mpc_real(real, mpc_result_val, mpfr::get_mpfr_rounding_mode(rounding));
mpc_imag(imag, mpc_result_val, mpfr::get_mpfr_rounding_mode(rounding));
mpfr::MPFRNumber mpfr_real(real, precision, rounding);
mpfr::MPFRNumber mpfr_imag(imag, precision, rounding);
mpfr::MPFRNumber mpfrLibcResultReal(
cpp::bit_cast<Complex<make_real_t<InputType>>>(libc_result).real,
precision, rounding);
mpfr::MPFRNumber mpfrLibcResultImag(
cpp::bit_cast<Complex<make_real_t<InputType>>>(libc_result).imag,
precision, rounding);
mpfr::MPFRNumber mpfrInputReal(
cpp::bit_cast<Complex<make_real_t<InputType>>>(input).real, precision,
rounding);
mpfr::MPFRNumber mpfrInputImag(
cpp::bit_cast<Complex<make_real_t<InputType>>>(input).imag, precision,
rounding);
cpp::array<char, 2048> msg_buf;
cpp::StringStream msg(msg_buf);
msg << "Match value not within tolerance value of MPFR result:\n"
<< " Input: " << mpfrInputReal.str() << " + " << mpfrInputImag.str()
<< "i\n"
<< " Rounding mode: " << str(rounding) << " , " << str(rounding) << '\n'
<< " Libc: " << mpfrLibcResultReal.str() << " + "
<< mpfrLibcResultImag.str() << "i\n"
<< " MPC: " << mpfr_real.str() << " + " << mpfr_imag.str() << "i\n"
<< '\n'
<< " ULP error: "
<< mpfr_real
.ulp_as_mpfr_number(
cpp::bit_cast<Complex<make_real_t<InputType>>>(libc_result)
.real)
.str()
<< " , "
<< mpfr_imag
.ulp_as_mpfr_number(
cpp::bit_cast<Complex<make_real_t<InputType>>>(libc_result)
.imag)
.str()
<< '\n';
tlog << msg.str();
mpc_clear(mpc_result_val);
mpfr_clear(real);
mpfr_clear(imag);
}
template void explain_unary_operation_single_output_same_type_error(
Operation, _Complex float, _Complex float, double, RoundingMode);
template void explain_unary_operation_single_output_same_type_error(
Operation, _Complex double, _Complex double, double, RoundingMode);
} // namespace internal
} // namespace mpc
} // namespace testing
} // namespace LIBC_NAMESPACE_DECL
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