From: Chris Lattner <sabre@nondot.org>
Date: Fri, 20 Dec 2002 04:18:13 +0000 (+0000)
Subject: Add support for isnan
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=dbcda22bf31e60e197f526fd3546cd196386937a;p=oota-llvm.git

Add support for isnan


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5111 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
index 89f64b1b9b4..79e730f0ece 100644
--- a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+++ b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
@@ -272,6 +272,14 @@ GenericValue lle_X_log(FunctionType *M, const vector<GenericValue> &Args) {
   return GV;
 }
 
+// int isnan(double value);
+GenericValue lle_X_isnan(FunctionType *F, const vector<GenericValue> &Args) {
+  assert(Args.size() == 1);
+  GenericValue GV;
+  GV.IntVal = isnan(Args[0].DoubleVal);
+  return GV;
+}
+
 // double floor(double)
 GenericValue lle_X_floor(FunctionType *M, const vector<GenericValue> &Args) {
   assert(Args.size() == 1);
@@ -627,6 +635,7 @@ void Interpreter::initializeExternalMethods() {
   FuncNames["lle_X_pow"]          = lle_X_pow;
   FuncNames["lle_X_exp"]          = lle_X_exp;
   FuncNames["lle_X_log"]          = lle_X_log;
+  FuncNames["lle_X_isnan"]        = lle_X_isnan;
   FuncNames["lle_X_floor"]        = lle_X_floor;
   FuncNames["lle_X_srand"]        = lle_X_srand;
   FuncNames["lle_X_drand48"]      = lle_X_drand48;