1 files changed, 34 insertions, 0 deletions
diff --git a/newlib/libm/complex/cabs.c b/newlib/libm/complex/cabs.c
index eb6366935..2750fab9a 100644
--- a/newlib/libm/complex/cabs.c
+++ b/newlib/libm/complex/cabs.c
@@ -8,6 +8,40 @@
  * Marco Atzeri <marco_atzeri@yahoo.it>
  */
 
+/*
+FUNCTION
+        <<cabs>>, <<cabsf>>---complex absolute-value
+
+INDEX
+        cabs
+INDEX
+        cabsf
+
+ANSI_SYNOPSIS
+       #include <complex.h>
+       double cabs(double complex <[z]>);
+       float cabsf(float complex <[z]>);
+
+
+DESCRIPTION
+        These functions compute compute the complex absolute value 
+        (also called norm, modulus, or magnitude) of <[z]>. 
+
+        <<cabsf>> is identical to <<cabs>>, except that it performs
+        its calculations on <<floats complex>>.
+
+RETURNS
+        The cabs functions return the complex absolute value.
+
+PORTABILITY
+        <<cabs>> and <<cabsf>> are ISO C99
+
+QUICKREF
+        <<cabs>> and <<cabsf>> are ISO C99
+
+*/
+
+
 #include <complex.h>
 #include <math.h>