From b94d4776cc2656b77262714f21e256caaff1617f Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Fri, 21 Jan 2011 10:38:27 -0800
Subject: uhd: use doubles as the theta when calculating the sine table

---
 host/examples/tx_waveforms.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'host/examples/tx_waveforms.cpp')

diff --git a/host/examples/tx_waveforms.cpp b/host/examples/tx_waveforms.cpp
index 7cc1f5ae0..553d6739d 100644
--- a/host/examples/tx_waveforms.cpp
+++ b/host/examples/tx_waveforms.cpp
@@ -48,9 +48,9 @@ float gen_ramp(float x){
 #define sine_table_len 2048
 static float sine_table[sine_table_len];
 UHD_STATIC_BLOCK(gen_sine_table){
-    static const float m_pi = std::acos(float(-1));
+    static const double tau = 2*std::acos(-1.0);
     for (size_t i = 0; i < sine_table_len; i++)
-        sine_table[i] = std::sin((2*m_pi*i)/sine_table_len);
+        sine_table[i] = float(std::sin((tau*i)/sine_table_len));
 }
 
 float gen_sine(float x){
-- 
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