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authorRich Felker <dalias@aerifal.cx>2011-02-12 00:22:29 -0500
committerRich Felker <dalias@aerifal.cx>2011-02-12 00:22:29 -0500
commit0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 (patch)
tree6eaef0d8a720fa3da580de87b647fff796fe80b3 /src/stdlib/atoll.c
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initial check-in, version 0.5.0 v0.5.0
Diffstat (limited to 'src/stdlib/atoll.c')
-rw-r--r--src/stdlib/atoll.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/stdlib/atoll.c b/src/stdlib/atoll.c
new file mode 100644
index 00000000..0e03e0a1
--- /dev/null
+++ b/src/stdlib/atoll.c
@@ -0,0 +1,16 @@
+#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++;
+	}
+	while (isdigit(*s))
+		n = 10*n + *s++ - '0';
+	return neg ? -n : n;
+}