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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /stdlib/tst-strtod.c
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initial import
Diffstat (limited to 'stdlib/tst-strtod.c')
-rw-r--r--stdlib/tst-strtod.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/stdlib/tst-strtod.c b/stdlib/tst-strtod.c
new file mode 100644
index 0000000000..a38ff4a74b
--- /dev/null
+++ b/stdlib/tst-strtod.c
@@ -0,0 +1,94 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+struct ltest
+ {
+ CONST char *str; /* Convert this. */
+ double expect; /* To get this. */
+ char left; /* With this left over. */
+ int err; /* And this in errno. */
+ };
+static CONST struct ltest tests[] =
+ {
+ { "12.345", 12.345, '\0', 0 },
+ { "12.345e19", 12.345e19, '\0', 0 },
+ { "-.1e+9", -.1e+9, '\0', 0 },
+ { ".125", .125, '\0', 0 },
+ { "1e20", 1e20, '\0', 0 },
+ { NULL, 0, '\0', 0 }
+ };
+
+static void EXFUN(expand, (char *dst, int c));
+
+int
+DEFUN_VOID(main)
+{
+ register CONST struct ltest *lt;
+ char *ep;
+ int status = 0;
+
+ for (lt = tests; lt->str != NULL; ++lt)
+ {
+ double d;
+
+ errno = 0;
+ d = strtod(lt->str, &ep);
+ printf("strtod(\"%s\") test %u",
+ lt->str, (unsigned int) (lt - tests));
+ if (d == lt->expect && *ep == lt->left && errno == lt->err)
+ puts("\tOK");
+ else
+ {
+ puts("\tBAD");
+ if (d != lt->expect)
+ printf(" returns %.60g, expected %.60g\n", d, lt->expect);
+ if (lt->left != *ep)
+ {
+ char exp1[5], exp2[5];
+ expand(exp1, *ep);
+ expand(exp2, lt->left);
+ printf(" leaves '%s', expected '%s'\n", exp1, exp2);
+ }
+ if (errno != lt->err)
+ printf(" errno %d (%s) instead of %d (%s)\n",
+ errno, strerror(errno), lt->err, strerror(lt->err));
+ status = 1;
+ }
+ }
+
+ exit(status ? EXIT_FAILURE : EXIT_SUCCESS);
+}
+
+static void
+DEFUN(expand, (dst, c), register char *dst AND register int c)
+{
+ if (isprint(c))
+ {
+ dst[0] = c;
+ dst[1] = '\0';
+ }
+ else
+ (void) sprintf(dst, "%#.3o", (unsigned int) c);
+}