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path: root/libf2c/libF77/qbitbits.c
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Diffstat (limited to 'libf2c/libF77/qbitbits.c')
-rw-r--r--libf2c/libF77/qbitbits.c62
1 files changed, 0 insertions, 62 deletions
diff --git a/libf2c/libF77/qbitbits.c b/libf2c/libF77/qbitbits.c
deleted file mode 100644
index f72858e..0000000
--- a/libf2c/libF77/qbitbits.c
+++ /dev/null
@@ -1,62 +0,0 @@
-#include "f2c.h"
-
-#ifndef LONGBITS
-#define LONGBITS 32
-#endif
-
-#ifndef LONG8BITS
-#define LONG8BITS (2*LONGBITS)
-#endif
-
-integer
-qbit_bits (longint a, integer b, integer len)
-{
- /* Assume 2's complement arithmetic */
-
- ulongint x, y;
-
- x = (ulongint) a;
- y = (ulongint) - 1L;
- x >>= b;
- y <<= len;
- return (longint) (x & y);
-}
-
-longint
-qbit_cshift (longint a, integer b, integer len)
-{
- ulongint x, y, z;
-
- x = (ulongint) a;
- if (len <= 0)
- {
- if (len == 0)
- return 0;
- goto full_len;
- }
- if (len >= LONG8BITS)
- {
- full_len:
- if (b >= 0)
- {
- b %= LONG8BITS;
- return (longint) (x << b | x >> (LONG8BITS - b));
- }
- b = -b;
- b %= LONG8BITS;
- return (longint) (x << (LONG8BITS - b) | x >> b);
- }
- y = z = (unsigned long) -1;
- y <<= len;
- z &= ~y;
- y &= x;
- x &= z;
- if (b >= 0)
- {
- b %= len;
- return (longint) (y | (z & (x << b | x >> (len - b))));
- }
- b = -b;
- b %= len;
- return (longint) (y | (z & (x >> b | x << (len - b))));
-}