Migrate to using musl 0.9.13 libc atoi, atol and atoll for better asm.js performance.

3 files changed, 50 insertions, 0 deletions

diff --git a/system/lib/libc/musl/src/stdlib/atoi.c b/system/lib/libc/musl/src/stdlib/atoi.c
new file mode 100644
index 00000000..9baca7b8
--- /dev/null
+++ b/system/lib/libc/musl/src/stdlib/atoi.c
@@ -0,0 +1,16 @@
+#include <stdlib.h>
+#include <ctype.h>
+
+int atoi(const char *s)
+{
+	int n=0, neg=0;
+	while (isspace(*s)) s++;
+	switch (*s) {
+	case '-': neg=1;
+	case '+': s++;
+	}
+	/* Compute n as a negative number to avoid overflow on INT_MIN */
+	while (isdigit(*s))
+		n = 10*n - (*s++ - '0');
+	return neg ? n : -n;
+}
diff --git a/system/lib/libc/musl/src/stdlib/atol.c b/system/lib/libc/musl/src/stdlib/atol.c
new file mode 100644
index 00000000..140ea3ea
--- /dev/null
+++ b/system/lib/libc/musl/src/stdlib/atol.c
@@ -0,0 +1,17 @@
+#include <stdlib.h>
+#include <ctype.h>
+
+long atol(const char *s)
+{
+	long n=0;
+	int neg=0;
+	while (isspace(*s)) s++;
+	switch (*s) {
+	case '-': neg=1;
+	case '+': s++;
+	}
+	/* Compute n as a negative number to avoid overflow on LONG_MIN */
+	while (isdigit(*s))
+		n = 10*n - (*s++ - '0');
+	return neg ? n : -n;
+}
diff --git a/system/lib/libc/musl/src/stdlib/atoll.c b/system/lib/libc/musl/src/stdlib/atoll.c
new file mode 100644
index 00000000..b6930489
--- /dev/null
+++ b/system/lib/libc/musl/src/stdlib/atoll.c
@@ -0,0 +1,17 @@
+#include <stdlib.h>
+#include <ctype.h>
+
+long long atoll(const char *s)
+{
+	long long n=0;
+	int neg=0;
+	while (isspace(*s)) s++;
+	switch (*s) {
+	case '-': neg=1;
+	case '+': s++;
+	}
+	/* Compute n as a negative number to avoid overflow on LLONG_MIN */
+	while (isdigit(*s))
+		n = 10*n - (*s++ - '0');
+	return neg ? n : -n;
+}