BSD 3 development

Work on file usr/src/libc/gen/atoi.c

Synthesized-from: 3bsd

diff --git a/usr/src/libc/gen/atoi.c b/usr/src/libc/gen/atoi.c
new file mode 100644 (file)
index 0000000..9088178
--- /dev/null
+++ b/usr/src/libc/gen/atoi.c
@@ -0,0 +1,24 @@
+atoi(ap)
+char *ap;
+{
+       register int  n, c;
+       register char *p;
+       int f;
+
+       p = ap;
+       n = 0;
+       f = 0;
+loop:
+       while(*p == ' ' || *p == '      ')
+               p++;
+       if(*p == '-') {
+               f++;
+               p++;
+               goto loop;
+       }
+       while(*p >= '0' && *p <= '9')
+               n = n*10 + *p++ - '0';
+       if(f)
+               n = -n;
+       return(n);
+}