build: wire math sources and tests

Makefile.am

@@ -28,7 +28,9 @@ AM_CFLAGS = @VLIBC_CFLAGS@
 #                             getitimer/setitimer/utimes.c + sys/time.h —
 #                             all wired), src/stdio (todo 15-18 FILE core
 #                             + popen; vfprintf.c/vfprintf_float.c now
-#                             wired with the printf test)
+#                             wired with the printf test),
+#                             src/math (todo 39-42 basic set — all L1,
+#                             wired with the consolidated math test)
 #   todo 39-42 src/math       todo 50 src/multibyte
 #   todo 11-14 src/stdlib     todo 43   src/complex     todo 53-54 src/regex
 #   todo 15-18 src/stdio      todo 9,51 src/ctype       todo 57-58 src/network
@@ -184,7 +186,31 @@ VLIBC_CORE_SRCS = \
     src/time/strftime.c \
     src/mman/mmap.c \
     src/passwd/passwd.c \
-    src/group/group.c
+    src/group/group.c \
+    src/math/ceil.c \
+    src/math/copysign.c \
+    src/math/fabs.c \
+    src/math/fdim.c \
+    src/math/floor.c \
+    src/math/fmax.c \
+    src/math/fmin.c \
+    src/math/fmod.c \
+    src/math/frexp.c \
+    src/math/ilogb.c \
+    src/math/ldexp.c \
+    src/math/llrint.c \
+    src/math/llround.c \
+    src/math/logb.c \
+    src/math/lrint.c \
+    src/math/lround.c \
+    src/math/modf.c \
+    src/math/nearbyint.c \
+    src/math/remainder.c \
+    src/math/remquo.c \
+    src/math/rint.c \
+    src/math/round.c \
+    src/math/scalbn.c \
+    src/math/trunc.c
 
 # Profile-gated sources, EXISTING gates preserved (strlcpy/strlcat stay L2
 # BSD, strcasestr stays L3 GNU — NOT promoted). Task 8/9 additions: stpcpy.c
@@ -263,6 +289,7 @@ vlibc_include_HEADERS = \
     include/stdlib.h \
     include/stdnoreturn.h \
     include/tar.h \
+    include/math.h \
     include/tgmath.h \
     include/threads.h \
     include/uchar.h \
@@ -428,7 +455,7 @@ check_PROGRAMS = test_syscall test_strerror test_setjmp test_headers \
     test_poll test_time test_scanf test_getline \
     test_systime test_printf test_stdio test_unistd_file \
     test_mman test_statvfs test_times test_syslog test_pwdgrp \
-    test_unistd_misc
+    test_unistd_misc test_math_basic
 
 test_syscall_SOURCES = tests/syscall_test.c
 test_syscall_CFLAGS = $(VLIBC_TEST_CFLAGS)
@@ -622,6 +649,12 @@ test_unistd_misc_DEPENDENCIES = crt1.o libvlibc-check.a
 test_unistd_misc_LINK = $(VLIBC_TEST_LINK)
 test_unistd_misc_LDADD = $(VLIBC_TEST_LDADD)
 
+test_math_basic_SOURCES = tests/test_math_basic.c
+test_math_basic_CFLAGS = $(VLIBC_TEST_CFLAGS)
+test_math_basic_DEPENDENCIES = crt1.o libvlibc-check.a
+test_math_basic_LINK = $(VLIBC_TEST_LINK)
+test_math_basic_LDADD = $(VLIBC_TEST_LDADD)
+
 # test_startup's default mode exits 42 by design, so it is NOT a bare TESTS
 # entry; tests/startup_modes.sh runs its full mode matrix and the -f failure
 # scenarios of the other binaries. test_malloc/test_string/test_ctype/
@@ -638,6 +671,7 @@ TESTS = test_syscall test_strerror test_setjmp test_headers \
     test_systime test_printf test_stdio test_unistd_file \
     test_mman test_statvfs test_times test_syslog test_pwdgrp \
     test_unistd_misc \
+    test_math_basic \
     tests/startup_modes.sh
 
 CLEANFILES = crt1.o libvlibc-check.a $(VLIBC_CHECK_OBJECTS)
@@ -665,4 +699,5 @@ EXTRA_DIST = \
     src/stdio/stdio_impl.h \
     src/stdio/vfprintf_float.c \
     src/time/time_impl.h \
-    src/unistd/unistd_impl.h
+    src/unistd/unistd_impl.h \
+    src/math/math_impl.h