From: Keith Packard <keithp@keithp.com>
Date: Sat, 4 May 2019 04:51:28 +0000 (-0700)
Subject: altos: Directly compute radio tuning values from frequency
X-Git-Tag: 1.9.1~1^2~86
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=a6e8b739c47c50fa472e3f2a41cf13abb8d82c07;hp=a6e8b739c47c50fa472e3f2a41cf13abb8d82c07

altos: Directly compute radio tuning values from frequency

The 8051 compiler doesn't support 64-bit ints, so the old
code used an iterative method in 32-bit values. That could take
a long time when the frequency was mis-entered in Hz or MHz instead of
kHz.

This direct-computation uses 64-bit ints, but takes a fixed amount of
time for any inputs.

Signed-off-by: Keith Packard <keithp@keithp.com>
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