Merge pull request #46568 from akien-mga/basisu_20210130

basis_universal: Update to upstream commit from Apr 16, 2021

1 files changed, 89 insertions, 0 deletions

diff --git a/thirdparty/basis_universal/encoder/cppspmd_math_declares.h b/thirdparty/basis_universal/encoder/cppspmd_math_declares.h
new file mode 100644
index 0000000000..cdb6447b62
--- /dev/null
+++ b/thirdparty/basis_universal/encoder/cppspmd_math_declares.h
@@ -0,0 +1,89 @@
+// Do not include this header directly.
+// This header defines shared struct spmd_kernel helpers.
+//
+// Copyright 2020-2021 Binomial LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// See cppspmd_math.h for detailed error statistics.
+
+CPPSPMD_FORCE_INLINE void reduce_expb(vfloat& arg, vfloat& two_int_a, vint& adjustment);
+CPPSPMD_FORCE_INLINE vfloat tan56(vfloat x);
+CPPSPMD_FORCE_INLINE vfloat tan82(vfloat x);
+
+inline vfloat log2_est(vfloat v);
+
+inline vfloat log_est(vfloat v);
+
+inline vfloat exp2_est(vfloat arg);
+
+inline vfloat exp_est(vfloat arg);
+
+inline vfloat pow_est(vfloat arg1, vfloat arg2);
+
+CPPSPMD_FORCE_INLINE vfloat recip_est1(const vfloat& q);
+CPPSPMD_FORCE_INLINE vfloat recip_est1_pn(const vfloat& q);
+
+inline vfloat mod_angles(vfloat a);
+
+inline vfloat sincos_est_a(vfloat a, bool sin_flag);
+CPPSPMD_FORCE_INLINE vfloat sin_est_a(vfloat a) { return sincos_est_a(a, true); }
+CPPSPMD_FORCE_INLINE vfloat cos_est_a(vfloat a) { return sincos_est_a(a, false); }
+
+inline vfloat sin_est(vfloat a);
+
+inline vfloat cos_est(vfloat a);
+
+// Don't call with values <= 0.
+CPPSPMD_FORCE_INLINE vfloat rsqrt_est1(vfloat x0);
+
+// Don't call with values <= 0.
+CPPSPMD_FORCE_INLINE vfloat rsqrt_est2(vfloat x0);
+
+CPPSPMD_FORCE_INLINE vfloat atan2_est(vfloat y, vfloat x);
+
+CPPSPMD_FORCE_INLINE vfloat atan_est(vfloat x) { return atan2_est(x, vfloat(1.0f)); }
+
+// Don't call this for angles close to 90/270! 
+inline vfloat tan_est(vfloat x);
+
+// https://burtleburtle.net/bob/rand/smallprng.html
+struct rand_context { vint a, b, c, d; };
+
+inline void seed_rand(rand_context& x, vint seed);
+
+// Returns 32-bit unsigned random numbers.
+inline vint get_randu(rand_context& x);
+
+// Returns random numbers between [low, high), or low if low >= high
+inline vint get_randi(rand_context& x, vint low, vint high);
+
+// Returns random numbers between [low, high), or low if low >= high
+inline vfloat get_randf(rand_context& x, vfloat low, vfloat high);
+
+CPPSPMD_FORCE_INLINE void init_reverse_bits(vint& tab1, vint& tab2);
+CPPSPMD_FORCE_INLINE vint reverse_bits(vint k, vint tab1, vint tab2);
+
+CPPSPMD_FORCE_INLINE vint count_leading_zeros(vint x);
+CPPSPMD_FORCE_INLINE vint count_leading_zeros_alt(vint x);
+
+CPPSPMD_FORCE_INLINE vint count_trailing_zeros(vint x);
+
+CPPSPMD_FORCE_INLINE vint count_set_bits(vint x);
+
+void print_vint(vint v);
+void print_vbool(vbool v);
+void print_vint_hex(vint v);
+void print_active_lanes(const char *pPrefix);
+void print_vfloat(vfloat v);
+