reinstate mask-field; correct argtype of phase - gcl.git - GNU Common Lisp

diff --git a/gcl/lsp/gcl_numlib.lsp b/gcl/lsp/gcl_numlib.lsp
index 31a3ce617..5bf1fd536 100755
--- a/gcl/lsp/gcl_numlib.lsp
+++ b/gcl/lsp/gcl_numlib.lsp

@@ -99,12 +99,18 @@

(check-type integer integer)

(logior (logandc2 integer z) (logand newbyte z)))

+(defun mask-field (bytespec integer)

+ (declare (optmize (safety 1)))

+ (check-type bytespec bytespec)

+ (check-type integer integer)

+ (logand integer (ash (1- (ash 1 (byte-size bytespec))) (byte-position bytespec))))

+

(defun phase (x)

(declare (optimize (safety 1)))

- (check-type x complex)

+ (check-type x number)

(if (= 0 x) 0.0

- (atan (imagpart x) (realpart x))))

+ (atan (imagpart x) (realpart x))))

(defun signum (x)

(declare (optimize (safety 1)))