4 files changed, 125 insertions, 0 deletions
diff --git a/src/userspace/mlibc/stdlib/atoi.c b/src/userspace/mlibc/stdlib/atoi.c
new file mode 100644
index 0000000..0643372
--- /dev/null
+++ b/src/userspace/mlibc/stdlib/atoi.c
@@ -0,0 +1,24 @@
+#include <mlibc/math.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <mlibc/string.h>
+
+int atoi(char *str)
+{
+    size_t s_str = strlen(str);
+    if (!s_str) return 0;
+
+    uint8_t negative = 0;
+    if (str[0] == '-') negative = 1;
+
+    size_t i = 0;
+    if (negative) i++;
+
+    int ret = 0;
+    for (; i < s_str; i++) {
+        ret += (str[i] - '0') * pow(10, (s_str - i) - 1);
+    }
+
+    if (negative) ret *= -1;
+    return ret;
+}
+\ No newline at end of file
diff --git a/src/userspace/mlibc/stdlib/htoa.c b/src/userspace/mlibc/stdlib/htoa.c
new file mode 100644
index 0000000..098e1c8
--- /dev/null
+++ b/src/userspace/mlibc/stdlib/htoa.c
@@ -0,0 +1,31 @@
+#include <stdint.h>
+#include <mlibc/string.h>
+#include <mlibc/stdlib.h>
+
+static const char __HTOA_TABLE[] = "0123456789ABCDEF";
+
+char *htoa(uint32_t n)
+{
+    char *ret = 0;
+    //kmalloc(10);
+
+    int i = 0;
+    while (n) {
+        ret[i++] = __HTOA_TABLE[n & 0xF];
+        n >>= 4;
+    }
+
+    if (!i) {
+        ret[0] = '0';
+        i++;
+    }
+
+    for (; i <= 9; i++) ret[i] = 0;
+
+    char *aux = strdup(ret);
+    // kfree(ret);
+    ret = aux;
+
+    strinv(ret);
+    return ret;
+}
+\ No newline at end of file
diff --git a/src/userspace/mlibc/stdlib/htoi.c b/src/userspace/mlibc/stdlib/htoi.c
new file mode 100644
index 0000000..489e5c0
--- /dev/null
+++ b/src/userspace/mlibc/stdlib/htoi.c
@@ -0,0 +1,23 @@
+#include <stddef.h>
+#include <mlibc/math.h>
+#include <mlibc/string.h>
+
+int htoi(char *str)
+{
+    size_t s_str = strlen(str);
+
+    size_t i = 0;
+    int ret = 0;
+    for (; i < s_str; i++) {
+        char c = str[i];
+        int aux = 0;
+        if (c >= '0' && c <= '9')
+            aux = c - '0';
+        else if (c >= 'A' && c <= 'F')
+            aux = (c - 'A') + 10;
+
+        ret += aux * pow(16, (s_str - i) - 1);
+    }
+
+    return ret;
+}
+\ No newline at end of file
diff --git a/src/userspace/mlibc/stdlib/itoa.c b/src/userspace/mlibc/stdlib/itoa.c
new file mode 100644
index 0000000..55c1383
--- /dev/null
+++ b/src/userspace/mlibc/stdlib/itoa.c
@@ -0,0 +1,47 @@
+#include <stdint.h>
+#include <mlibc/math.h>
+#include <mlibc/string.h>
+#include <mlibc/stdlib.h>
+
+static const char __ITOA_TABLE[] = "0123456789";
+
+char *itoa(int n)
+{
+    //if (paging_enabled == 0)
+    //    return "0"; // kmalloc isn't available
+
+    if (!n) {
+        char *ret = 0;
+        //kmalloc(2);
+        ret[0] = '0';
+        ret[1] = 0;
+        return ret;
+    }
+    uint8_t negative = (uint8_t) (n < 0);
+    if (negative) n *= -1;
+
+    int sz;
+    for (sz = 0; n % pow(10, sz) != n; sz++) {}
+
+    char *ret = 0;
+    //kmalloc(sz + 1);
+
+    for (int i = 0; i < sz; i++) {
+        int digit = (n % pow(10, i + 1)) / pow(10, i);
+        ret[i] = __ITOA_TABLE[digit];
+    }
+    ret[sz] = 0;
+
+    if (negative) {
+        char *aux = 0;
+        //kmalloc(sz + 2);
+        strcpy(aux, ret);
+        aux[sz] = '-';
+        aux[sz + 1] = 0;
+        // kfree(ret);
+        ret = aux;
+    }
+
+    strinv(ret);
+    return ret;
+}
+\ No newline at end of file