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diff src/eval.c @ 8228:a0e552c51c34 v7.4.1407

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commit https://github.com/vim/vim/commit/f1b6ac72293e658bb6e68c5cfd926c405b1b6f34 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Feb 23 21:26:43 2016 +0100 patch 7.4.1407 Problem: json_encode() does not handle NaN and inf properly. (David Barnett) Solution: For JSON turn them into "null". For JS use "NaN" and "Infinity". Add isnan().
author Christian Brabandt <cb@256bit.org>
date Tue, 23 Feb 2016 21:30:08 +0100
parents 3456e2ebebd4
children 51ca0cee512e
line wrap: on
line diff
--- a/src/eval.c
+++ b/src/eval.c
@@ -628,6 +628,9 @@ static void f_insert(typval_T *argvars, 
 static void f_invert(typval_T *argvars, typval_T *rettv);
 static void f_isdirectory(typval_T *argvars, typval_T *rettv);
 static void f_islocked(typval_T *argvars, typval_T *rettv);
+#if defined(FEAT_FLOAT) && defined(HAVE_MATH_H)
+static void f_isnan(typval_T *argvars, typval_T *rettv);
+#endif
 static void f_items(typval_T *argvars, typval_T *rettv);
 #ifdef FEAT_JOB
 # ifdef FEAT_CHANNEL
@@ -8320,6 +8323,9 @@ static struct fst
     {"invert",		1, 1, f_invert},
     {"isdirectory",	1, 1, f_isdirectory},
     {"islocked",	1, 1, f_islocked},
+#if defined(FEAT_FLOAT) && defined(HAVE_MATH_H)
+    {"isnan",		1, 1, f_isnan},
+#endif
     {"items",		1, 1, f_items},
 #ifdef FEAT_JOB
 # ifdef FEAT_CHANNEL
@@ -14740,6 +14746,18 @@ f_islocked(typval_T *argvars, typval_T *
     clear_lval(&lv);
 }
 
+#if defined(FEAT_FLOAT) && defined(HAVE_MATH_H)
+/*
+ * "isnan()" function
+ */
+    static void
+f_isnan(typval_T *argvars, typval_T *rettv)
+{
+    rettv->vval.v_number = argvars[0].v_type == VAR_FLOAT
+					    && isnan(argvars[0].vval.v_float);
+}
+#endif
+
 static void dict_list(typval_T *argvars, typval_T *rettv, int what);
 
 /*