Author: awatry
Date: Tue Jan 17 21:14:10 2017
New Revision: 292335
URL: http://llvm.org/viewvc/llvm-project?rev=292335&view=rev
Log:
math: Add logb builtin
Ported from the amd-builtins branch.
Signed-off-by: Aaron Watry <awa...@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsena...@amd.com>
CC: Tom Stellard <thomas.stell...@amd.com>
Added:
libclc/trunk/generic/include/clc/math/logb.h
libclc/trunk/generic/include/clc/math/logb.inc
libclc/trunk/generic/lib/math/logb.cl
Modified:
libclc/trunk/generic/include/clc/clc.h
libclc/trunk/generic/lib/SOURCES
Modified: libclc/trunk/generic/include/clc/clc.h
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/clc.h?rev=292335&r1=292334&r2=292335&view=diff
==============================================================================
--- libclc/trunk/generic/include/clc/clc.h (original)
+++ libclc/trunk/generic/include/clc/clc.h Tue Jan 17 21:14:10 2017
@@ -76,6 +76,7 @@
#include <clc/math/log10.h>
#include <clc/math/log1p.h>
#include <clc/math/log2.h>
+#include <clc/math/logb.h>
#include <clc/math/mad.h>
#include <clc/math/modf.h>
#include <clc/math/nextafter.h>
Added: libclc/trunk/generic/include/clc/math/logb.h
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/math/logb.h?rev=292335&view=auto
==============================================================================
--- libclc/trunk/generic/include/clc/math/logb.h (added)
+++ libclc/trunk/generic/include/clc/math/logb.h Tue Jan 17 21:14:10 2017
@@ -0,0 +1,2 @@
+#define __CLC_BODY <clc/math/logb.inc>
+#include <clc/math/gentype.inc>
Added: libclc/trunk/generic/include/clc/math/logb.inc
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/include/clc/math/logb.inc?rev=292335&view=auto
==============================================================================
--- libclc/trunk/generic/include/clc/math/logb.inc (added)
+++ libclc/trunk/generic/include/clc/math/logb.inc Tue Jan 17 21:14:10 2017
@@ -0,0 +1 @@
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE logb(__CLC_GENTYPE a);
Modified: libclc/trunk/generic/lib/SOURCES
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/SOURCES?rev=292335&r1=292334&r2=292335&view=diff
==============================================================================
--- libclc/trunk/generic/lib/SOURCES (original)
+++ libclc/trunk/generic/lib/SOURCES Tue Jan 17 21:14:10 2017
@@ -104,6 +104,7 @@ math/log.cl
math/log10.cl
math/log1p.cl
math/log2.cl
+math/logb.cl
math/mad.cl
math/modf.cl
math/native_log.cl
Added: libclc/trunk/generic/lib/math/logb.cl
URL:
http://llvm.org/viewvc/llvm-project/libclc/trunk/generic/lib/math/logb.cl?rev=292335&view=auto
==============================================================================
--- libclc/trunk/generic/lib/math/logb.cl (added)
+++ libclc/trunk/generic/lib/math/logb.cl Tue Jan 17 21:14:10 2017
@@ -0,0 +1,31 @@
+#include <clc/clc.h>
+#include "math.h"
+#include "../clcmacro.h"
+
+_CLC_OVERLOAD _CLC_DEF float logb(float x) {
+ int ax = as_int(x) & EXSIGNBIT_SP32;
+ float s = -118 - clz(ax);
+ float r = (ax >> EXPSHIFTBITS_SP32) - EXPBIAS_SP32;
+ r = ax >= PINFBITPATT_SP32 ? as_float(ax) : r;
+ r = ax < 0x00800000 ? s : r;
+ r = ax == 0 ? as_float(NINFBITPATT_SP32) : r;
+ return r;
+}
+
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, logb, float);
+
+#ifdef cl_khr_fp64
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+
+_CLC_OVERLOAD _CLC_DEF double logb(double x) {
+ long ax = as_long(x) & EXSIGNBIT_DP64;
+ double s = -1011L - clz(ax);
+ double r = (int) (ax >> EXPSHIFTBITS_DP64) - EXPBIAS_DP64;
+ r = ax >= PINFBITPATT_DP64 ? as_double(ax) : r;
+ r = ax < 0x0010000000000000L ? s : r;
+ r = ax == 0L ? as_double(NINFBITPATT_DP64) : r;
+ return r;
+}
+
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, logb, double)
+#endif
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