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authorRich Felker <dalias@aerifal.cx>2018-08-22 19:11:58 -0400
committerRich Felker <dalias@aerifal.cx>2018-08-22 19:11:58 -0400
commit184ef36f85d66583306413727fc5f39557d391e4 (patch)
treebd29313bae91879960ac27fbdd032b474346b4fe
parent767f7a1091af3a3dcee2f7a49d0713359a81961c (diff)
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fix FP_ILOGB0 and FP_ILOGBNAN definitions to be valid for use in #if
commit 98c9af500125df41fdb46d7e384b00982d72493a wrongly claimed they do not need to be valid for such usage, but the last sentence of C11 7.1.4 ΒΆ1 imposes a broad requirement that all macros specified as integer constant expressions also need to be valid for #if. simply write the value out explicitly. there is no value here in pretending that the width of int will vary.
-rw-r--r--include/math.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/math.h b/include/math.h
index 6ac91da2..fea34686 100644
--- a/include/math.h
+++ b/include/math.h
@@ -27,7 +27,7 @@ extern "C" {
#define MATH_ERREXCEPT 2
#define math_errhandling 2
-#define FP_ILOGBNAN (-1-(int)(((unsigned)-1)>>1))
+#define FP_ILOGBNAN (-1-0x7fffffff)
#define FP_ILOGB0 FP_ILOGBNAN
#define FP_NAN 0