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authorRuss Cox <rsc@swtch.com>2020-01-08 22:28:44 -0500
committerRuss Cox <rsc@swtch.com>2020-01-12 15:07:42 -0500
commite0c4896ed41faa71445d9e0b1751aba5157343c9 (patch)
treec2a15c8e62edadce763f6ac3fe6bf4e521edddb3 /src/lib9
parentfafa622a5bdf71adfbb4334541c3b65f29c89ca9 (diff)
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lib9: make a p9frexp function wrapping system frexp
Under certain conditions it looks like frexp gets #defined to something else on macOS during system headers, which then breaks the declaration in libc.h.
Diffstat (limited to 'src/lib9')
-rw-r--r--src/lib9/frexp.c9
-rw-r--r--src/lib9/mkfile1
2 files changed, 10 insertions, 0 deletions
diff --git a/src/lib9/frexp.c b/src/lib9/frexp.c
new file mode 100644
index 00000000..fe3e2f73
--- /dev/null
+++ b/src/lib9/frexp.c
@@ -0,0 +1,9 @@
+#include <u.h>
+#define NOPLAN9DEFINES
+#include <libc.h>
+
+double
+p9frexp(double d, int *i)
+{
+ return frexp(d, i);
+}
diff --git a/src/lib9/mkfile b/src/lib9/mkfile
index 943b597b..7c37de42 100644
--- a/src/lib9/mkfile
+++ b/src/lib9/mkfile
@@ -22,6 +22,7 @@ FMTOFILES=\
fmtstr.$O\
fmtvprint.$O\
fprint.$O\
+ frexp.$O\
nan64.$O\
print.$O\
runefmtstr.$O\