From 8a19547957a86bed3f58c9abc1ac218d04698faf Mon Sep 17 00:00:00 2001
From: Freya Murphy <freya@freyacat.org>
Date: Tue, 8 Apr 2025 10:39:48 -0400
Subject: break apart c libaray

---
 user/lib/atox.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 user/lib/atox.c

(limited to 'user/lib/atox.c')

diff --git a/user/lib/atox.c b/user/lib/atox.c
new file mode 100644
index 0000000..c4bef59
--- /dev/null
+++ b/user/lib/atox.c
@@ -0,0 +1,30 @@
+#include <stdlib.h>
+#include <ctype.h>
+
+#define ATOX(name, type)             \
+	type name(const char *s)         \
+	{                                \
+		for (; isspace(*s); s++)     \
+			;                        \
+		int neg = 0;                 \
+		switch (*s) {                \
+		case '-':                    \
+			neg = 1;                 \
+			/* fallthrough */        \
+		case '+':                    \
+			s++;                     \
+			break;                   \
+		}                            \
+		type num = 0;                \
+		for (; *s == '0'; s++)       \
+			;                        \
+		for (; isdigit(*s); s++) {   \
+			num *= 10;               \
+			num += *s - '0';         \
+		}                            \
+		return num * (neg ? -1 : 1); \
+	}
+
+ATOX(atoi, int)
+ATOX(atol, long int)
+ATOX(atoll, long long int)
-- 
cgit v1.2.3-freya