blind

commit 2debbbe6e70b66357fa510850b57c47406a87249
parent 1911be8e3b716e895efc88a05be3c47509f26747
Author: Mattias Andrée <maandree@kth.se>
Date:   Wed, 25 Jan 2017 16:56:05 +0100

blind-arithm: add abs

Signed-off-by: Mattias Andrée <maandree@kth.se>

Diffstat:
M
man/blind-arithm.1
 | 
7
++++++-
M
src/blind-arithm.c
 | 
3
++-

2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/man/blind-arithm.1 b/man/blind-arithm.1
@@ -50,13 +50,18 @@ is the value of the right-hand operand.
 .TP
 .B log
 Calculate the logarithm of the left-hand operand
-and divid it by the logarithm of the rigth-hand operand.
+and divide it by the logarithm of the rigth-hand operand.
 .TP
 .B min
 Select the lowest operand.
 .TP
 .B max
 Select the highest operand.
+.TP
+.B abs
+Calculate the the sum of absolute value of the left-hand
+operand subtracted by the right-hand operand, and the
+right-hand operand
 .SH OPTIONS
 .TP
 .B -a
diff --git a/src/blind-arithm.c b/src/blind-arithm.c
@@ -26,7 +26,8 @@ typedef void (*process_func)(struct stream *left, struct stream *right, size_t n
 	X(exp, *lh = pow(*lh, rh))\
 	X(log, *lh = log(*lh) / log(rh))\
 	X(min, *lh = *lh < rh ? *lh : rh)\
-	X(max, *lh = *lh > rh ? *lh : rh)
+	X(max, *lh = *lh > rh ? *lh : rh)\
+	X(abs, *lh = fabs(*lh - rh) + rh)
 
 #define X(NAME, ALGO)\
 	static void\