commit e332f658e0ee33a799b204640b2d79590500b039
author Elliott Hughes <enh@google.com> Tue May 08 15:07:43 2018 -0700
committer Elliott Hughes <enh@google.com> Wed May 09 12:25:12 2018 -0700
tree ebf1acc64da70be14e81b050c788969c73463724
parent 0364a4b44671abd016e10b0cf3a0927ae2f77592

Switch to FreeBSD's actual sincos.

Before:
  BM_math_sin_fast                48 ns         48 ns   14693053
  BM_math_sincos                  61 ns         61 ns   11470219

After:
  BM_math_sin_fast                48 ns         48 ns   14725120
  BM_math_sincos                  43 ns         43 ns   16329843

Bug: N/A
Test: ran tests, benchmarks
Change-Id: I8693c64135233c0641af5302c38748f47ac76737

benchmarks/math_benchmark.cpp

diff --git a/benchmarks/math_benchmark.cpp b/benchmarks/math_benchmark.cpp
index 2e54202..ccb3555 100644
--- a/benchmarks/math_benchmark.cpp
+++ b/benchmarks/math_benchmark.cpp
@@ -220,3 +220,13 @@
   SetLabel(state);
 }
 BIONIC_BENCHMARK_WITH_ARG(BM_math_fabs, "MATH_COMMON");
+
+static void BM_math_sincos(benchmark::State& state) {
+  d = 1.0;
+  while (state.KeepRunning()) {
+    double s, c;
+    sincos(d, &s, &c);
+    d += s + c;
+  }
+}
+BIONIC_BENCHMARK(BM_math_sincos);