diff options
Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/__signbit.c')
| -rw-r--r-- | lib/mlibc/options/ansi/musl-generic-math/__signbit.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/__signbit.c b/lib/mlibc/options/ansi/musl-generic-math/__signbit.c new file mode 100644 index 0000000..e700b6b --- /dev/null +++ b/lib/mlibc/options/ansi/musl-generic-math/__signbit.c @@ -0,0 +1,13 @@ +#include "libm.h" + +// FIXME: macro in math.h +int __signbit(double x) +{ + union { + double d; + uint64_t i; + } y = { x }; + return y.i>>63; +} + + |