Fixed a few boneheaded mistakes; added test for strtod().

1 files changed, 51 insertions, 0 deletions

diff --git a/tests/runner.py b/tests/runner.py
index 7c6d45ec..302078a6 100644
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -1976,6 +1976,57 @@ if 'benchmark' not in sys.argv:
       self.do_test(src, 'In func: 13*First calling main_fptr from lib.*Second calling lib_fptr from main.*Var: 42*',
                    output_nicerizer=lambda x: x.replace('\n', '*'))
 
+    def test_strtod(self):
+      src = r'''
+        #include <stdio.h>
+        #include <stdlib.h>
+
+        int main() {
+          char* endptr;
+
+          printf("\n");
+          printf("%g\n", strtod("0", &endptr));
+          printf("%g\n", strtod("0.", &endptr));
+          printf("%g\n", strtod("0.0", &endptr));
+          printf("%g\n", strtod("1", &endptr));
+          printf("%g\n", strtod("1.", &endptr));
+          printf("%g\n", strtod("1.0", &endptr));
+          printf("%g\n", strtod("123", &endptr));
+          printf("%g\n", strtod("123.456", &endptr));
+          printf("%g\n", strtod("1234567891234567890", &endptr));
+          printf("%g\n", strtod("1234567891234567890e+50", &endptr));
+          printf("%g\n", strtod("84e+220", &endptr));
+          printf("%g\n", strtod("84e+420", &endptr));
+          printf("%g\n", strtod("123e-50", &endptr));
+          printf("%g\n", strtod("123e-250", &endptr));
+          printf("%g\n", strtod("123e-450", &endptr));
+
+          char str[] = "12.34e56end";
+          strtod(str, &endptr);
+          printf("%d\n", endptr - str);
+          return 0;
+        }
+        '''
+      expected = '''
+        0
+        0
+        0
+        1
+        1
+        1
+        123
+        123.456
+        1.23457e+18
+        1.23457e+68
+        8.4e+221
+        inf
+        1.23e-48
+        1.23e-248
+        0
+        8
+        '''
+      self.do_test(src, re.sub(r'\n\s+', '\n', expected))
+
     def test_printf(self):
       src = open(path_from_root('tests', 'printf', 'test.c'), 'r').read()
       expected = open(path_from_root('tests', 'printf', 'output.txt'), 'r').read()