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| author | Damien George <damien.p.george@gmail.com> | 2017-06-23 15:52:00 +1000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2017-06-28 15:12:04 +1000 |
| commit | 045116551ec06d2619250cffff5e8b56a5f827d1 (patch) | |
| tree | 314e63ab9307cb0bc4d33486f173ced228209186 /lib/libm_dbl/__signbit.c | |
| parent | 409fc8f9c1c5f07bcbdb6229196775deb4133e03 (diff) | |
| download | micropython-045116551ec06d2619250cffff5e8b56a5f827d1.tar.gz micropython-045116551ec06d2619250cffff5e8b56a5f827d1.zip | |
lib: Add libm_dbl, a double-precision math library, from musl-1.1.16.
Diffstat (limited to 'lib/libm_dbl/__signbit.c')
| -rw-r--r-- | lib/libm_dbl/__signbit.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/libm_dbl/__signbit.c b/lib/libm_dbl/__signbit.c new file mode 100644 index 0000000000..18c6728a50 --- /dev/null +++ b/lib/libm_dbl/__signbit.c @@ -0,0 +1,12 @@ +#include "libm.h" + +int __signbitd(double x) +{ + union { + double d; + uint64_t i; + } y = { x }; + return y.i>>63; +} + + |