diff options
Diffstat (limited to 'Build/source/utils/pmx/pmx-2.6.18/libf2c/pow_hh.c')
-rw-r--r-- | Build/source/utils/pmx/pmx-2.6.18/libf2c/pow_hh.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/Build/source/utils/pmx/pmx-2.6.18/libf2c/pow_hh.c b/Build/source/utils/pmx/pmx-2.6.18/libf2c/pow_hh.c new file mode 100644 index 00000000000..882168501aa --- /dev/null +++ b/Build/source/utils/pmx/pmx-2.6.18/libf2c/pow_hh.c @@ -0,0 +1,39 @@ +#include "f2c.h" +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef KR_headers +shortint pow_hh(ap, bp) shortint *ap, *bp; +#else +shortint pow_hh(shortint *ap, shortint *bp) +#endif +{ + shortint pow, x, n; + unsigned u; + + x = *ap; + n = *bp; + + if (n <= 0) { + if (n == 0 || x == 1) + return 1; + if (x != -1) + return x == 0 ? 1/x : 0; + n = -n; + } + u = n; + for(pow = 1; ; ) + { + if(u & 01) + pow *= x; + if(u >>= 1) + x *= x; + else + break; + } + return(pow); + } +#ifdef __cplusplus +} +#endif |