[oneMKL][BLAS] Add clarification for alpha=0. (#480)

Author: mmeterel

source/elements/oneMKL/source/domains/blas/her.rst

@@ -115,7 +115,7 @@ her (Buffer Version)
       lower triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \ =\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 
@@ -220,7 +220,7 @@ her (USM Version)
       lower triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 

source/elements/oneMKL/source/domains/blas/her2.rst

@@ -124,7 +124,7 @@ her2 (Buffer Version)
       lower triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 
@@ -242,7 +242,7 @@ her2 (USM Version)
       lower triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 

source/elements/oneMKL/source/domains/blas/hpr.rst

@@ -112,7 +112,7 @@ hpr (Buffer Version)
       triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 
@@ -215,7 +215,7 @@ hpr (USM Version)
       triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 

source/elements/oneMKL/source/domains/blas/hpr2.rst

@@ -121,7 +121,7 @@ hpr2 (Buffer Version)
       triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section
 
@@ -237,7 +237,7 @@ hpr2 (USM Version)
       triangular part of the Hermitian matrix ``A`` if
       ``upper_lower``\ \=\ ``lower``.
 
-      The imaginary parts of the diagonal elements are set to zero.
+      If ``alpha`` is zero, ``A`` matrix is unchanged, otherwise imaginary parts of the diagonal elements are set to zero.
 
 .. container:: section