| 1 | /* Beginning of modification history */ |
| 2 | /* Written 02-01-02 by Nick Ing-Simmons (nick@ing-simmons.net) */ |
| 3 | /* Modified 02-03-27 by Paul Green (Paul.Green@stratus.com) to |
| 4 | add socketpair() dummy. */ |
| 5 | /* Modified 02-04-24 by Paul Green (Paul.Green@stratus.com) to |
| 6 | have pow(0,0) return 1, avoiding c-1471. */ |
| 7 | /* End of modification history */ |
| 8 | |
| 9 | #include <errno.h> |
| 10 | #include <fcntl.h> |
| 11 | #include <sys/types.h> |
| 12 | #include <unistd.h> |
| 13 | |
| 14 | /* VOS doesn't supply a truncate function, so we build one up |
| 15 | from the available POSIX functions. */ |
| 16 | |
| 17 | int |
| 18 | truncate(const char *path, off_t len) |
| 19 | { |
| 20 | int fd = open(path,O_WRONLY); |
| 21 | int code = -1; |
| 22 | if (fd >= 0) { |
| 23 | code = ftruncate(fd,len); |
| 24 | close(fd); |
| 25 | } |
| 26 | return code; |
| 27 | } |
| 28 | |
| 29 | /* VOS doesn't implement AF_UNIX (AF_LOCAL) style sockets, and |
| 30 | the perl emulation of them hangs on VOS (due to stcp-1257), |
| 31 | so we supply this version that always fails. */ |
| 32 | |
| 33 | int |
| 34 | socketpair (int family, int type, int protocol, int fd[2]) { |
| 35 | fd[0] = 0; |
| 36 | fd[1] = 0; |
| 37 | errno = ENOSYS; |
| 38 | return -1; |
| 39 | } |
| 40 | |
| 41 | /* Supply a private version of the power function that returns 1 |
| 42 | for x**0. This avoids c-1471. Abigail's Japh tests depend |
| 43 | on this fix. We leave all the other cases to the VOS C |
| 44 | runtime. */ |
| 45 | |
| 46 | double s_crt_pow(double *x, double *y); |
| 47 | |
| 48 | double pow(x,y) |
| 49 | double x, y; |
| 50 | { |
| 51 | if (y == 0e0) /* c-1471 */ |
| 52 | { |
| 53 | errno = EDOM; |
| 54 | return (1e0); |
| 55 | } |
| 56 | |
| 57 | return(s_crt_pow(&x,&y)); |
| 58 | } |