1 files changed, 69 insertions, 0 deletions
diff --git a/libc-bottom-half/sources/math/math-builtins.c b/libc-bottom-half/sources/math/math-builtins.c
new file mode 100644
index 0000000..a5eb7cd
--- /dev/null
+++ b/libc-bottom-half/sources/math/math-builtins.c
@@ -0,0 +1,69 @@
+// Each of the following math functions can be implemented with a single
+// wasm instruction, so use that implementation rather than the portable
+// one in libm.
+
+#include <math.h>
+
+float fabsf(float x) {
+    return __builtin_fabsf(x);
+}
+
+double fabs(double x) {
+    return __builtin_fabs(x);
+}
+
+float sqrtf(float x) {
+    return __builtin_sqrtf(x);
+}
+
+double sqrt(double x) {
+    return __builtin_sqrt(x);
+}
+
+float copysignf(float x, float y) {
+    return __builtin_copysignf(x, y);
+}
+
+double copysign(double x, double y) {
+    return __builtin_copysign(x, y);
+}
+
+float ceilf(float x) {
+    return __builtin_ceilf(x);
+}
+
+double ceil(double x) {
+    return __builtin_ceil(x);
+}
+
+float floorf(float x) {
+    return __builtin_floorf(x);
+}
+
+double floor(double x) {
+    return __builtin_floor(x);
+}
+
+float truncf(float x) {
+    return __builtin_truncf(x);
+}
+
+double trunc(double x) {
+    return __builtin_trunc(x);
+}
+
+float nearbyintf(float x) {
+    return __builtin_nearbyintf(x);
+}
+
+double nearbyint(double x) {
+    return __builtin_nearbyint(x);
+}
+
+float rintf(float x) {
+    return __builtin_rintf(x);
+}
+
+double rint(double x) {
+    return __builtin_rint(x);
+}