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author | Samuel Holland <samuel@sholland.org> | 2018-01-14 18:40:59 -0600 |
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committer | Samuel Holland <samuel@sholland.org> | 2018-01-14 18:57:52 -0600 |
commit | dfafb0735f09d65a392d03a2d1ad3d0b934981da (patch) | |
tree | f5a1c49f22df2e72494cd114785763b111d6924a /libgcompat/math.c | |
parent | d40369b0e09e4e2228ebff305067ec2d99220848 (diff) | |
download | gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.tar.gz gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.tar.bz2 gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.tar.xz gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.zip |
libgcompat: Add and use a macro for defining symbol aliases
* Prefer providing the underscore-prefixed symbol as the strong
definition.
* Do not use a weak alias if the alias is also underscore-prefixed.
* Make libgcompat objects depend on the new header.
[NOTE: I originally took the weak_alias macro from musl's libc.h, but
it's trivial and the same pattern already in use. If desired, I
can add the musl copyright notice.]
Signed-off-by: Samuel Holland <samuel@sholland.org>
Diffstat (limited to 'libgcompat/math.c')
-rw-r--r-- | libgcompat/math.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/libgcompat/math.c b/libgcompat/math.c index 42ed032..2982116 100644 --- a/libgcompat/math.c +++ b/libgcompat/math.c @@ -1,26 +1,27 @@ #include <math.h> /* isinf, isnan */ +#include "alias.h" /* weak_alias */ + int __isinff(float number) { return isinf(number); } +weak_alias(__isinff, isinff); int __isinf(double number) { return isinf(number); } +weak_alias(__isinf, isinf); int __isnanf(float number) { return isnan(number); } +weak_alias(__isnanf, isnanf); int __isnan(double number) { return isnan(number); } - -extern __typeof(__isnanf) isnanf __attribute__((weak, alias("__isnanf"))); -extern __typeof(__isnan) isnan __attribute__((weak, alias("__isnan"))); -extern __typeof(__isinff) isinff __attribute__((weak, alias("__isinff"))); -extern __typeof(__isinf) isinf __attribute__((weak, alias("__isinf"))); +weak_alias(__isnan, isnan); |