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Vectorize tensor.isnan() by using typed predicates.

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This commit is contained in:
Rasmus Munk Larsen
2023-03-16 04:04:22 +00:00
parent f02856c640
commit 0488b708b4
8 changed files with 110 additions and 25 deletions
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6
Eigen/src/Core/arch/Default/GenericPacketMathFunctions.h
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@@ -1124,7 +1124,7 @@ Packet psqrt_complex(const Packet& a) {
Packet imag_inf_result;
imag_inf_result.v = por(pand(cst_pos_inf, real_mask), pandnot(a.v, real_mask));
// unless otherwise specified, if either the real or imaginary component is nan, the entire result is nan
Packet result_is_nan = pandnot(ptrue(result), pcmp_eq(result, result));
Packet result_is_nan = pisnan(result);
result = por(result_is_nan, result);
return pselect(is_imag_inf, imag_inf_result, pselect(is_real_inf, real_inf_result, result));
@@ -1796,7 +1796,7 @@ EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS Packet generic_pow(const Pac
const Packet abs_x_is_lt_one = pcmp_lt(abs_x, cst_one);
const Packet x_is_one = pandnot(abs_x_is_one, x_is_neg);
const Packet x_is_neg_one = pand(abs_x_is_one, x_is_neg);
const Packet x_is_nan = pandnot(ptrue(x), pcmp_eq(x, x));
const Packet x_is_nan = pisnan(x);
// Predicates for sign and magnitude of y.
const Packet abs_y = pabs(y);
@@ -1804,7 +1804,7 @@ EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS Packet generic_pow(const Pac
const Packet abs_y_is_zero = pcmp_eq(abs_y, cst_zero);
const Packet y_is_neg = pcmp_lt(y, cst_zero);
const Packet y_is_pos = pandnot(ptrue(y), por(abs_y_is_zero, y_is_neg));
const Packet y_is_nan = pandnot(ptrue(y), pcmp_eq(y, y));
const Packet y_is_nan = pisnan(y);
const Packet abs_y_is_inf = pcmp_eq(abs_y, cst_pos_inf);
EIGEN_CONSTEXPR Scalar huge_exponent =
(NumTraits<Scalar>::max_exponent() * Scalar(EIGEN_LN2)) / NumTraits<Scalar>::epsilon();