1 files changed, 55 insertions, 0 deletions

diff --git a/baseline/source/gsm_dec/add.h b/baseline/source/gsm_dec/add.h
new file mode 100644
index 0000000..ffe79b7
--- /dev/null
+++ b/baseline/source/gsm_dec/add.h
@@ -0,0 +1,55 @@
+#ifndef GSM_DEC_ADD_H
+#define GSM_DEC_ADD_H
+
+#define GSM_MULT_R(a, b) /* word a, word b, !(a == b == MIN_WORD) */  \
+  (SASR( ((longword)(a) * (longword)(b) + 16384), 15 ))
+
+# define GSM_MULT(a,b)   /* word a, word b, !(a == b == MIN_WORD) */  \
+  (SASR( ((longword)(a) * (longword)(b)), 15 ))
+
+# define GSM_L_MULT(a, b) /* word a, word b */  \
+  (((longword)(a) * (longword)(b)) << 1)
+
+# define GSM_L_ADD(a, b)  \
+  ( (a) <  0 ? ( (b) >= 0 ? (a) + (b) \
+     : (utmp = (ulongword)-((a) + 1) + (ulongword)-((b) + 1)) \
+       >= MAX_LONGWORD ? MIN_LONGWORD : -(longword)utmp-2 )   \
+  : ((b) <= 0 ? (a) + (b)   \
+            : (utmp = (ulongword)(a) + (ulongword)(b)) >= MAX_LONGWORD \
+        ? MAX_LONGWORD : utmp))
+
+/*
+   # define GSM_ADD(a, b) \
+    ((ltmp = (longword)(a) + (longword)(b)) >= MAX_WORD \
+    ? MAX_WORD : ltmp <= MIN_WORD ? MIN_WORD : ltmp)
+*/
+/* Nonportable, but faster: */
+
+#define GSM_ADD(a, b) \
+  ((ulongword)((ltmp = (longword)(a) + (longword)(b)) - MIN_WORD) > \
+    MAX_WORD - MIN_WORD ? (ltmp > 0 ? MAX_WORD : MIN_WORD) : ltmp)
+
+# define GSM_SUB(a, b)  \
+  ((ltmp = (longword)(a) - (longword)(b)) >= MAX_WORD \
+  ? MAX_WORD : ltmp <= MIN_WORD ? MIN_WORD : ltmp)
+
+# define GSM_ABS(a) ((a) < 0 ? ((a) == MIN_WORD ? MAX_WORD : -(a)) : (a))
+
+#define saturate(x)   \
+  ((x) < MIN_WORD ? MIN_WORD : (x) > MAX_WORD ? MAX_WORD: (x))
+
+/* Use these if necessary:
+
+  # define GSM_MULT_R(a, b) gsm_mult_r(a, b)
+  # define GSM_MULT(a, b)   gsm_mult(a, b)
+  # define GSM_L_MULT(a, b) gsm_L_mult(a, b)
+
+  # define GSM_L_ADD(a, b)  gsm_L_add(a, b)
+  # define GSM_ADD(a, b)    gsm_add(a, b)
+  # define GSM_SUB(a, b)    gsm_sub(a, b)
+
+  # define GSM_ABS(a)   gsm_abs(a)
+
+*/
+
+#endif /* GSM_DEC_ADD_H */