[Libclc-dev] [PATCH] math: Add frexp ported from amd-builtins
Aaron Watry via Libclc-dev
libclc-dev at lists.llvm.org
Mon Feb 1 20:47:59 PST 2016
The float implementation is almost a direct port from the amd-builtins,
but instead of just having a scalar and float4 implementation, it has
a scalar and arbitrary width vector implementation.
The double scalar is also a direct port from AMD's builtin release.
The double vector implementation copies the logic in the float vector
implementation using the values from the double scalar version.
Both have been tested in piglit using tests just sent to that project's
mailing list.
Signed-off-by: Aaron Watry <awatry at gmail.com>
---
generic/include/clc/clc.h | 1 +
generic/include/clc/math/frexp.h | 2 +
generic/include/clc/math/frexp.inc | 3 +
generic/include/clc/math/gentype.inc | 24 ++++++++
generic/lib/SOURCES | 1 +
generic/lib/math/frexp.cl | 10 ++++
generic/lib/math/frexp.inc | 110 +++++++++++++++++++++++++++++++++++
7 files changed, 151 insertions(+)
create mode 100644 generic/include/clc/math/frexp.h
create mode 100644 generic/include/clc/math/frexp.inc
create mode 100644 generic/lib/math/frexp.cl
create mode 100644 generic/lib/math/frexp.inc
diff --git a/generic/include/clc/clc.h b/generic/include/clc/clc.h
index bd2f67f..4060ea1 100644
--- a/generic/include/clc/clc.h
+++ b/generic/include/clc/clc.h
@@ -58,6 +58,7 @@
#include <clc/math/fmin.h>
#include <clc/math/fmod.h>
#include <clc/math/fract.h>
+#include <clc/math/frexp.h>
#include <clc/math/half_rsqrt.h>
#include <clc/math/half_sqrt.h>
#include <clc/math/hypot.h>
diff --git a/generic/include/clc/math/frexp.h b/generic/include/clc/math/frexp.h
new file mode 100644
index 0000000..dda23da
--- /dev/null
+++ b/generic/include/clc/math/frexp.h
@@ -0,0 +1,2 @@
+#define __CLC_BODY <clc/math/frexp.inc>
+#include <clc/math/gentype.inc>
diff --git a/generic/include/clc/math/frexp.inc b/generic/include/clc/math/frexp.inc
new file mode 100644
index 0000000..2a6f7f5
--- /dev/null
+++ b/generic/include/clc/math/frexp.inc
@@ -0,0 +1,3 @@
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE frexp(__CLC_GENTYPE x, global __CLC_INTN *iptr);
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE frexp(__CLC_GENTYPE x, local __CLC_INTN *iptr);
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE frexp(__CLC_GENTYPE x, private __CLC_INTN *iptr);
diff --git a/generic/include/clc/math/gentype.inc b/generic/include/clc/math/gentype.inc
index 41eb411..e6ffad1 100644
--- a/generic/include/clc/math/gentype.inc
+++ b/generic/include/clc/math/gentype.inc
@@ -2,38 +2,50 @@
#define __CLC_FPSIZE 32
#define __CLC_GENTYPE float
+#define __CLC_INTN int
#define __CLC_SCALAR
#include __CLC_BODY
#undef __CLC_GENTYPE
+#undef __CLC_INTN
#undef __CLC_SCALAR
#define __CLC_GENTYPE float2
#define __CLC_INTN int2
+#define __CLC_VECSIZE 2
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE float3
#define __CLC_INTN int3
+#define __CLC_VECSIZE 3
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE float4
#define __CLC_INTN int4
+#define __CLC_VECSIZE 4
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE float8
#define __CLC_INTN int8
+#define __CLC_VECSIZE 8
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE float16
#define __CLC_INTN int16
+#define __CLC_VECSIZE 16
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
@@ -47,37 +59,49 @@
#define __CLC_SCALAR
#define __CLC_GENTYPE double
+#define __CLC_INTN int
#include __CLC_BODY
#undef __CLC_GENTYPE
+#undef __CLC_INTN
#undef __CLC_SCALAR
#define __CLC_GENTYPE double2
#define __CLC_INTN int2
+#define __CLC_VECSIZE 2
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE double3
#define __CLC_INTN int3
+#define __CLC_VECSIZE 3
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE double4
#define __CLC_INTN int4
+#define __CLC_VECSIZE 4
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE double8
#define __CLC_INTN int8
+#define __CLC_VECSIZE 8
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
#define __CLC_GENTYPE double16
#define __CLC_INTN int16
+#define __CLC_VECSIZE 16
#include __CLC_BODY
+#undef __CLC_VECSIZE
#undef __CLC_GENTYPE
#undef __CLC_INTN
diff --git a/generic/lib/SOURCES b/generic/lib/SOURCES
index 1daae8d..c3a5a8a 100644
--- a/generic/lib/SOURCES
+++ b/generic/lib/SOURCES
@@ -86,6 +86,7 @@ math/fmax.cl
math/fmin.cl
math/fmod.cl
math/fract.cl
+math/frexp.cl
math/half_rsqrt.cl
math/half_sqrt.cl
math/hypot.cl
diff --git a/generic/lib/math/frexp.cl b/generic/lib/math/frexp.cl
new file mode 100644
index 0000000..acd5d93
--- /dev/null
+++ b/generic/lib/math/frexp.cl
@@ -0,0 +1,10 @@
+#include <clc/clc.h>
+
+#include "math.h"
+
+#ifdef cl_khr_fp64
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+#endif
+
+#define __CLC_BODY <frexp.inc>
+#include <clc/math/gentype.inc>
diff --git a/generic/lib/math/frexp.inc b/generic/lib/math/frexp.inc
new file mode 100644
index 0000000..2676993
--- /dev/null
+++ b/generic/lib/math/frexp.inc
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * Copyright (c) 2016 Aaron Watry
+ *
+ * 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.
+ */
+#if __CLC_FPSIZE == 32
+#ifdef __CLC_SCALAR
+_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE frexp(float x, private int *ep) {
+ int i = as_int(x);
+ int ai = i & 0x7fffffff;
+ int d = ai > 0 & ai < 0x00800000;
+ // scale subnormal by 2^26 without multiplying
+ float s = as_float(ai | 0x0d800000) - 0x1.0p-100F;
+ ai = d ? as_int(s) : ai;
+ int e = (ai >> 23) - 126 - (d ? 26 : 0);
+ int t = ai == 0 | e == 129;
+ i = (i & 0x80000000) | 0x3f000000 | (ai & 0x007fffff);
+ *ep = t ? 0 : e;
+ return t ? x : as_float(i);
+}
+#define __CLC_FREXP_VEC(width) \
+_CLC_OVERLOAD _CLC_DEF float##width frexp(float##width x, private int##width *ep) { \
+ int##width i = as_int##width(x); \
+ int##width ai = i & 0x7fffffff; \
+ int##width d = ai > 0 & ai < 0x00800000; \
+ /* scale subnormal by 2^26 without multiplying */ \
+ float##width s = as_float##width(ai | 0x0d800000) - 0x1.0p-100F; \
+ ai = bitselect(ai, as_int##width(s), d); \
+ int##width e = (ai >> 23) - 126 - bitselect((int##width)0, (int##width)26, d); \
+ int##width t = ai == (int##width)0 | e == (int##width)129; \
+ i = (i & (int##width)0x80000000) | (int##width)0x3f000000 | (ai & 0x007fffff); \
+ *ep = bitselect(e, (int##width)0, t); \
+ return bitselect(as_float##width(i), x, as_float##width(t)); \
+}
+__CLC_FREXP_VEC(2)
+__CLC_FREXP_VEC(3)
+__CLC_FREXP_VEC(4)
+__CLC_FREXP_VEC(8)
+__CLC_FREXP_VEC(16)
+#undef __CLC_FREXP_VEC
+#endif
+#endif
+
+#if __CLC_FPSIZE == 64
+#ifdef __CLC_SCALAR
+_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE frexp(__CLC_GENTYPE x, private __CLC_INTN *ep) {
+ long i = as_long(x);
+ long ai = i & 0x7fffffffffffffffL;
+ int d = ai > 0 & ai < 0x0010000000000000L;
+ // scale subnormal by 2^54 without multiplying
+ double s = as_double(ai | 0x0370000000000000L) - 0x1.0p-968;
+ ai = d ? as_long(s) : ai;
+ int e = (int)(ai >> 52) - 1022 - (d ? 54 : 0);
+ int t = ai == 0 | e == 1025;
+ i = (i & 0x8000000000000000L) | 0x3fe0000000000000L | (ai & 0x000fffffffffffffL);
+ *ep = t ? 0 : e;
+ return t ? x : as_double(i);
+}
+#define __CLC_FREXP_VEC(width) \
+_CLC_OVERLOAD _CLC_DEF double##width frexp(double##width x, private int##width *ep) { \
+ long##width i = as_long##width(x); \
+ long##width ai = i & 0x7fffffffffffffffL; \
+ long##width d = ai > 0 & ai < 0x0010000000000000L; \
+ /* scale subnormal by 2^54 without multiplying */ \
+ double##width s = as_double##width(ai | 0x0370000000000000L) - 0x1.0p-968; \
+ ai = bitselect(ai, as_long##width(s), d); \
+ int##width e = convert_int##width(ai >> 52) - 1022 - bitselect((int##width)0, (int##width)54, convert_int##width(d)); \
+ int##width t = convert_int##width(ai == (long##width)0) | (e == (int##width)129); \
+ i = (i & (long##width)0x8000000000000000L) | (long##width)0x3fe0000000000000L | (ai & 0x000fffffffffffffL); \
+ *ep = bitselect(e, (int##width)0, t); \
+ return bitselect(as_double##width(i), x, as_double##width(convert_long##width(t))); \
+}
+__CLC_FREXP_VEC(2)
+__CLC_FREXP_VEC(3)
+__CLC_FREXP_VEC(4)
+__CLC_FREXP_VEC(8)
+__CLC_FREXP_VEC(16)
+#undef __CLC_FREXP_VEC
+#endif
+#endif
+
+#define __CLC_FREXP_DEF(addrspace) \
+ _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE frexp(__CLC_GENTYPE x, addrspace __CLC_INTN *iptr) { \
+ __CLC_INTN private_iptr; \
+ __CLC_GENTYPE ret = frexp(x, &private_iptr); \
+ *iptr = private_iptr; \
+ return ret; \
+}
+
+__CLC_FREXP_DEF(local);
+__CLC_FREXP_DEF(global);
+
+#undef __CLC_FREXP_DEF
\ No newline at end of file
--
2.5.0
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