hare

commit 68cc24d912c3bf5636ad9633c9d831630f7a09b8
parent 63a5a771b6d8abb183e3bbe82a4edffdb95cacab
Author: Drew DeVault <sir@cmpwn.com>
Date:   Sun, 23 May 2021 15:20:48 -0400

time: implement time::add

Signed-off-by: Drew DeVault <sir@cmpwn.com>

Diffstat:
M
scripts/gen-stdlib
 | 
1
+
M
stdlib.mk
 | 
2
++
A
time/arithm.ha
 | 
7
+++++++

3 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/scripts/gen-stdlib b/scripts/gen-stdlib
@@ -690,6 +690,7 @@ time() {
 	gen_srcs time \
 		'$(PLATFORM)/functions.ha' \
 		'$(PLATFORM)/$(ARCH).ha' \
+		arithm.ha \
 		types.ha
 	gen_ssa time linux::vdso
 }
diff --git a/stdlib.mk b/stdlib.mk
@@ -969,6 +969,7 @@ $(HARECACHE)/temp/temp.ssa: $(stdlib_temp_srcs) $(stdlib_rt) $(stdlib_crypto_ran
 stdlib_time_srcs= \
 	$(STDLIB)/time/$(PLATFORM)/functions.ha \
 	$(STDLIB)/time/$(PLATFORM)/$(ARCH).ha \
+	$(STDLIB)/time/arithm.ha \
 	$(STDLIB)/time/types.ha
 
 $(HARECACHE)/time/time.ssa: $(stdlib_time_srcs) $(stdlib_rt) $(stdlib_linux_vdso)
@@ -2041,6 +2042,7 @@ $(TESTCACHE)/temp/temp.ssa: $(testlib_temp_srcs) $(testlib_rt) $(testlib_crypto_
 testlib_time_srcs= \
 	$(STDLIB)/time/$(PLATFORM)/functions.ha \
 	$(STDLIB)/time/$(PLATFORM)/$(ARCH).ha \
+	$(STDLIB)/time/arithm.ha \
 	$(STDLIB)/time/types.ha
 
 $(TESTCACHE)/time/time.ssa: $(testlib_time_srcs) $(testlib_rt) $(testlib_linux_vdso)
diff --git a/time/arithm.ha b/time/arithm.ha
@@ -0,0 +1,7 @@
+// Adds a [[duration]] to an [[instant]], returning an instant further in the
+// future (given a positive duration), or further in the past (given a negative
+// duration).
+export fn add(a: instant, b: duration) instant = instant {
+	sec = a.sec + b / SECOND,
+	nsec = a.nsec + b,
+};