[libclc] 151/291: Add half limits

[Andreas Beckmann]

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anbe pushed a commit to branch master
in repository libclc.

commit 39185f3b13815f546465e2bc44da30292c4522b8
Author: Jeroen Ketema <j.ketema at imperial.ac.uk>
Date:   Tue Jun 24 09:51:01 2014 +0000

    Add half limits
    
    These are apparently only defined in OpenCL 1.2.
    
    HALF_MAX, HALF_MIN and HALF_EPSILON are currently omitted. Clang does
    not seem to support the ‘h’ suffix for half float constants even with
    the cl_khr_fp16 extension enabled.
    
    Reviewed-by: Tom Sellard <tom at stellard.net>
    
    
    git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@211579 91177308-0d34-0410-b5e6-96231b3b80d8
---
 generic/include/clc/float/definitions.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/generic/include/clc/float/definitions.h b/generic/include/clc/float/definitions.h
index cd65324..6d532a5 100644
--- a/generic/include/clc/float/definitions.h
+++ b/generic/include/clc/float/definitions.h
@@ -46,3 +46,18 @@
 #define M_PI            0x1.921fb54442d18p+1
 
 #endif
+
+#ifdef cl_khr_fp16
+
+#if __OPENCL_VERSION__ >= CL_VERSION_1_2
+
+#define HALF_DIG        3
+#define HALF_MANT_DIG   11
+#define HALF_MAX_10_EXP +4
+#define HALF_MAX_EXP    +16
+#define HALF_MIN_10_EXP -4
+#define HALF_MIN_EXP    -13
+
+#endif
+
+#endif

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