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Diffstat (limited to 'contrib/libf2c/libF77/qbitbits.c')
-rw-r--r--contrib/libf2c/libF77/qbitbits.c94
1 files changed, 45 insertions, 49 deletions
diff --git a/contrib/libf2c/libF77/qbitbits.c b/contrib/libf2c/libF77/qbitbits.c
index ad4ac96..f72858e 100644
--- a/contrib/libf2c/libF77/qbitbits.c
+++ b/contrib/libf2c/libF77/qbitbits.c
@@ -8,59 +8,55 @@
#define LONG8BITS (2*LONGBITS)
#endif
- integer
-#ifdef KR_headers
-qbit_bits(a, b, len) longint a; integer b, len;
-#else
-qbit_bits(longint a, integer b, integer len)
-#endif
+integer
+qbit_bits (longint a, integer b, integer len)
{
- /* Assume 2's complement arithmetic */
+ /* Assume 2's complement arithmetic */
- ulongint x, y;
+ ulongint x, y;
- x = (ulongint) a;
- y = (ulongint)-1L;
- x >>= b;
- y <<= len;
- return (longint)(x & y);
- }
+ x = (ulongint) a;
+ y = (ulongint) - 1L;
+ x >>= b;
+ y <<= len;
+ return (longint) (x & y);
+}
- longint
-#ifdef KR_headers
-qbit_cshift(a, b, len) longint a; integer b, len;
-#else
-qbit_cshift(longint a, integer b, integer len)
-#endif
+longint
+qbit_cshift (longint a, integer b, integer len)
{
- ulongint x, y, z;
+ 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));
+ 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))));
+}
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