* Library man pages don't mention "-D_GNU_SOURCE" (newlib)
@ 2020-02-08 22:34 Keith Thompson
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From: Keith Thompson @ 2020-02-08 22:34 UTC (permalink / raw)
To: cygwin; +Cc: Keith Thompson
The exp10 function is a GNU extension, as the man page acknowledges.
The exp10(3) man page (available if you install the "cygwin-doc"
package) doesn't mention that you need to compile with "-D_GNU_SOURCE"
to use it. It seems to be inordinately difficult to find this
information.
The corresponding GNU man page, for example exp10(3) on Ubuntu, says:
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <math.h>
I suggest adding similar wording to the Cygwin/newlib man pages for
functions that require it.
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2020-02-08 22:34 Library man pages don't mention "-D_GNU_SOURCE" (newlib) Keith Thompson
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