rsys

commit 2079f1d51595b798024910301b23d5043d6242f8
parent 53e79630e5f6774c81d9a5dc9fbbd601c3f11144
Author: vaplv <vaplv@free.fr>
Date:   Fri, 21 Oct 2016 14:13:24 +0200

Add and test the sin_cos function

Diffstat:
M
cmake/CMakeLists.txt
 | 
3
++-
A
src/math.c
 | 
30
++++++++++++++++++++++++++++++
M
src/math.h
 | 
3
+++
M
src/test_math.c
 | 
5
+++++

4 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
@@ -45,6 +45,7 @@ set(RSYS_FILES_SRC
   image.c
   library.c
   logger.c
+  math.c
   mem_allocator.c
   quaternion.c
   str.c)
@@ -188,7 +189,7 @@ if(NOT NO_TEST)
   new_test(test_list rsys)
   new_test(test_logger rsys)
   new_test(test_mem_allocator rsys)
-  new_test(test_math ${MATH_LIB})
+  new_test(test_math ${MATH_LIB} rsys)
   new_test(test_quaternion rsys)
   new_test(test_ref)
   new_test(test_signal rsys)
diff --git a/src/math.c b/src/math.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2013-2016 Vincent Forest (vaplv@free.fr)
+ *
+ * The RSys library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * The RSys library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the RSys library. If not, see <http://www.gnu.org/licenses/>. */
+
+#define _GNU_SOURCE
+#include "math.h"
+
+void
+sin_cos(const double d, double* s, double* c)
+{
+  ASSERT(s && c);
+#ifdef COMPILER_GCC
+  sincos(d, s, c);
+#else
+  *s = sin(d);
+  *c = cos(d);
+#endif
+}
+
diff --git a/src/math.h b/src/math.h
@@ -104,4 +104,7 @@ cos2sin(const double d)
   return sin2cos(d);
 }
 
+RSYS_API void 
+sin_cos(const double d, double* s, double* c);
+
 #endif /* MATH_H */
diff --git a/src/test_math.c b/src/test_math.c
@@ -24,6 +24,7 @@ int
 main(int argc, char** argv)
 {
   double d;
+  double sinus, cosine;
   float f, g;
   int i;
   (void)argc, (void)argv;
@@ -122,6 +123,10 @@ main(int argc, char** argv)
     CHECK(eq_eps(s, tmp, 1.0e-8) || eq_eps(s, -tmp, 1.0e-8), 1);
     tmp = sin2cos(s);
     CHECK(eq_eps(c, tmp, 1.0e-8) || eq_eps(c, -tmp, 1.0e-8), 1);
+
+    sin_cos(d, &sinus, &cosine);
+    CHECK(eq_eps(sinus, s, 1.e-8), 1);
+    CHECK(eq_eps(cosine, c, 1.e-8), 1);
   }
 
   CHECK(signf(-3.14159f), -1.f);