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authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2001-03-13 05:45:13 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2001-03-13 05:45:13 +0000
commite502549be1bea41406ccef0e819b0e9cb8cdb069 (patch)
tree78a2fe9e8986665213222c60304e5682e0431303 /missing/hypot.c
parent8fc5876485fb84bf9c93b569ff0cb57cf2b21f7d (diff)
* io.c (argf_seek_m): wrong calling sequence of rb_io_seek().
* parse.y (cond0): no special treatment of string literal in condition. * math.c: add acos, asin, atan, conh, sinh, tanh and hypot to Math. * configure.in: check hypot availablility. * missing/hypot.c: public domain rewrite of hypot. * parse.y (warn_unless_e_option): warning condition was wrong. * parse.y (warning_unless_e_option): ditto. * enum.c (enum_all): new method 'all?', which returns true if block returns true for all elements. * enum.c (enum_any): new method 'any?', which returns true if block retruns true for any of elements. * marshal.c (marshal_load): do not give warning unless explicitly set to verbose. * eval.c (rb_exit): give string value "exit" to SystemExit. * ruby.c (proc_options): -v should not print version if proc_options called via moreswitches(). * parse.y (stmt): while/until modifier must work for empty body. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1241 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'missing/hypot.c')
-rw-r--r--missing/hypot.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/missing/hypot.c b/missing/hypot.c
new file mode 100644
index 0000000..aad5259
--- /dev/null
+++ b/missing/hypot.c
@@ -0,0 +1,17 @@
+/* public domain rewrite of hypot */
+
+#include <math.h>
+
+double hypot(x,y)
+ double x, y;
+{
+ if (x < 0) x = -x;
+ if (y < 0) y = -y;
+ if (x < y) {
+ double tmp = x;
+ x = y; y = tmp;
+ }
+ if (y == 0.0) return x;
+ y /= x;
+ return x * sqrt(1.0+y*y);
+}