Make experimental and librarize

1 files changed, 40 insertions, 0 deletions

diff --git a/chad/experimental/timespec.h b/chad/experimental/timespec.h
new file mode 100644
index 0000000..f72f431
--- /dev/null
+++ b/chad/experimental/timespec.h
@@ -0,0 +1,40 @@
+#ifndef TIMESPEC_H
+#define TIMESPEC_H
+/* ripped partly from glibc */
+#include <time.h>
+#include <chad/experimental/macros.h>
+#include <chad/terry.h>
+
+/* -- pontentially over designed and undertested. */
+/* -- consider this "LIKELY TO BE REVISED OR REMOVED!" */
+/* -- ESPECIALLY the generics and the from group */
+
+long TIMESPEC_HZ = 1000000000L;
+
+typedef struct timespec timespec_t;
+
+static const timespec_t one_second = {1, 0}, zero_seconds = {0, 0};
+
+f64 timespec_to_f64(timespec_t ts);
+f32 timespec_to_f32(timespec_t ts);
+double timespec_to_double(timespec_t ts);
+float timespec_to_float(timespec_t ts);
+
+#ifdef TERRY_SMALL_FLOAT_IMPRECISE
+#define from_timespec(ts,to) _Generic((to), double *: double_from_timespec, float *: float_from_timespec)(ts,to)
+#else
+#define from_timespec(ts,to) _Generic((to), f64 *: f64_from_timespec, f32 *: f32_from_timespec, double *: double_from_timespec, float *: float_from_timespec)(ts,to)
+#endif
+
+void f64_from_timespec(timespec_t ts, f64 * r);
+void f32_from_timespec(timespec_t ts, f32 * r);
+void double_from_timespec(timespec_t ts, double * r);
+void float_from_timespec(timespec_t ts, float * r);
+
+timespec_t timespec_add(timespec_t a, timespec_t b);
+timespec_t timespec_sub(timespec_t a, timespec_t b);
+/* -1, 0, 1 */
+int timespec_cmp(timespec_t a, timespec_t b);
+timespec_t timespec_max(timespec_t a, timespec_t b);
+timespec_t timespec_min(timespec_t a, timespec_t b);
+#endif /* TIMESPEC_H */