[libclc] 167/291: Implement sin builtin for float types

[Andreas Beckmann]

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anbe pushed a commit to branch master
in repository libclc.

commit a63df067faf8a0ce2267c746aa9af928ae8c927b
Author: Tom Stellard <thomas.stellard at amd.com>
Date:   Wed Jul 23 15:16:21 2014 +0000

    Implement sin builtin for float types
    
    This double version still uses @llvm.sin.
    
    git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@213762 91177308-0d34-0410-b5e6-96231b3b80d8
---
 generic/include/clc/math/sin.h   |  9 ++----
 generic/include/clc/math/sin.inc |  1 +
 generic/lib/SOURCES              |  1 +
 generic/lib/math/sin.cl          | 70 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 75 insertions(+), 6 deletions(-)

diff --git a/generic/include/clc/math/sin.h b/generic/include/clc/math/sin.h
index e50b71a..6d4cf5a 100644
--- a/generic/include/clc/math/sin.h
+++ b/generic/include/clc/math/sin.h
@@ -1,6 +1,3 @@
-#undef sin
-#define sin __clc_sin
-
-#define __CLC_FUNCTION __clc_sin
-#define __CLC_INTRINSIC "llvm.sin"
-#include <clc/math/unary_intrin.inc>
+#define __CLC_BODY <clc/math/sin.inc>
+#include <clc/math/gentype.inc>
+#undef __CLC_BODY
diff --git a/generic/include/clc/math/sin.inc b/generic/include/clc/math/sin.inc
new file mode 100644
index 0000000..e722fa3
--- /dev/null
+++ b/generic/include/clc/math/sin.inc
@@ -0,0 +1 @@
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE sin(__CLC_GENTYPE a);
diff --git a/generic/lib/SOURCES b/generic/lib/SOURCES
index 5abdb58..7efe08c 100644
--- a/generic/lib/SOURCES
+++ b/generic/lib/SOURCES
@@ -40,6 +40,7 @@ math/mix.cl
 math/clc_nextafter.cl
 math/nextafter.cl
 math/pown.cl
+math/sin.cl
 math/sincos.cl
 math/sincos_helpers.cl
 relational/all.cl
diff --git a/generic/lib/math/sin.cl b/generic/lib/math/sin.cl
new file mode 100644
index 0000000..ffc4dd1
--- /dev/null
+++ b/generic/lib/math/sin.cl
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <clc/clc.h>
+
+#include "math.h"
+#include "sincos_helpers.h"
+#include "../clcmacro.h"
+
+_CLC_OVERLOAD _CLC_DEF float sin(float x)
+{
+    int ix = as_int(x);
+    int ax = ix & 0x7fffffff;
+    float dx = as_float(ax);
+
+    float r0, r1;
+    int regn = argReductionS(&r0, &r1, dx);
+
+    float ss = sinf_piby4(r0, r1);
+    float cc = cosf_piby4(r0, r1);
+
+    float s = (regn & 1) != 0 ? cc : ss;
+    s = as_float(as_int(s) ^ ((regn > 1) << 31) ^ (ix ^ ax));
+
+    s = ax >= PINFBITPATT_SP32 ? as_float(QNANBITPATT_SP32) : s;
+
+    //Subnormals
+    s = x == 0.0f ? x : s;
+
+    return s;
+}
+
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, sin, float);
+
+#ifdef cl_khr_fp64
+
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+
+#define __CLC_FUNCTION __clc_sin_intrinsic
+#define __CLC_INTRINSIC "llvm.sin"
+#include <clc/math/unary_intrin.inc>
+#undef __CLC_FUNCTION
+#undef __CLC_INTRINSIC
+
+_CLC_OVERLOAD _CLC_DEF double sin(double x) {
+    return __clc_sin_intrinsic(x);
+}
+
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, sin, double);
+
+#endif

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