diff options
Diffstat (limited to 'contrib/gdtoa/test/ddtest.c')
| -rw-r--r-- | contrib/gdtoa/test/ddtest.c | 58 |
1 files changed, 26 insertions, 32 deletions
diff --git a/contrib/gdtoa/test/ddtest.c b/contrib/gdtoa/test/ddtest.c index aa32e92..6fc3251 100644 --- a/contrib/gdtoa/test/ddtest.c +++ b/contrib/gdtoa/test/ddtest.c @@ -26,14 +26,8 @@ THIS SOFTWARE. ****************************************************************/ -/* Please send bug reports to - David M. Gay - Bell Laboratories, Room 2C-463 - 600 Mountain Avenue - Murray Hill, NJ 07974-0636 - U.S.A. - dmg@bell-labs.com - */ +/* Please send bug reports to David M. Gay (dmg at acm dot org, + * with " at " changed at "@" and " dot " changed to "."). */ /* Test program for g_ddfmt, strtoIdd, strtopdd, and strtordd. * @@ -73,22 +67,22 @@ dprint(char *what, double d) #endif { char buf[32]; - ULong *L = (ULong*)&d; + union { double d; ULong L[2]; } u; + u.d = d; g_dfmt(buf,&d,0,sizeof(buf)); - printf("%s = %s = #%lx %lx\n", what, buf, U L[_0], U L[_1]); + printf("%s = %s = #%lx %lx\n", what, buf, U u.L[_0], U u.L[_1]); } int main(Void) { - ULong *L; char *s, *s1, *se, *se1; int dItry, i, j, r = 1, ndig = 0; - double dd[2], ddI[4]; + double ddI[4]; long LL[4]; + union { double dd[2]; ULong L[4]; } u; - L = (ULong*)&dd[0]; while( (s = fgets(ibuf, sizeof(ibuf), stdin)) !=0) { while(*s <= ' ') if (!*s++) @@ -106,16 +100,16 @@ main(Void) } break; /* nan? */ case '#': - LL[0] = L[_0]; - LL[1] = L[_1]; - LL[2] = L[2+_0]; - LL[3] = L[2+_1]; + LL[0] = u.L[_0]; + LL[1] = u.L[_1]; + LL[2] = u.L[2+_0]; + LL[3] = u.L[2+_1]; sscanf(s+1, "%lx %lx %lx %lx", &LL[0], &LL[1], &LL[2], &LL[3]); - L[_0] = LL[0]; - L[_1] = LL[1]; - L[2+_0] = LL[2]; - L[2+_1] = LL[3]; + u.L[_0] = LL[0]; + u.L[_1] = LL[1]; + u.L[2+_0] = LL[2]; + u.L[2+_1] = LL[3]; printf("\nInput: %s", ibuf); printf(" --> f = #%lx %lx %lx %lx\n", LL[0],LL[1],LL[2],LL[3]); @@ -126,24 +120,24 @@ main(Void) while(*s1 <= ' ' && *s1) s1++; if (!*s1) { dItry = 1; - i = strtordd(ibuf, &se, r, dd); + i = strtordd(ibuf, &se, r, u.dd); if (r == 1) { j = strtopdd(ibuf, &se1, ddI); - if (i != j || dd[0] != ddI[0] - || dd[1] != ddI[1] || se != se1) + if (i != j || u.dd[0] != ddI[0] + || u.dd[1] != ddI[1] || se != se1) printf("***strtopdd and strtordd disagree!!\n:"); } printf("strtopdd consumes %d bytes and returns %d\n", (int)(se-ibuf), i); } else { - dd[0] = strtod(s, &se); - dd[1] = strtod(se, &se); + u.dd[0] = strtod(s, &se); + u.dd[1] = strtod(se, &se); } fmt_test: - dprint("dd[0]", dd[0]); - dprint("dd[1]", dd[1]); - se = g_ddfmt(obuf, dd, ndig, sizeof(obuf)); + dprint("dd[0]", u.dd[0]); + dprint("dd[1]", u.dd[1]); + se = g_ddfmt(obuf, u.dd, ndig, sizeof(obuf)); printf("g_ddfmt(%d) gives %d bytes: \"%s\"\n\n", ndig, (int)(se-obuf), se ? obuf : "<null>"); if (!dItry) @@ -151,7 +145,7 @@ main(Void) printf("strtoIdd returns %d,", strtoIdd(ibuf, &se, ddI,&ddI[2])); printf(" consuming %d bytes.\n", (int)(se-ibuf)); if (ddI[0] == ddI[2] && ddI[1] == ddI[3]) { - if (ddI[0] == dd[0] && ddI[1] == dd[1]) + if (ddI[0] == u.dd[0] && ddI[1] == u.dd[1]) printf("ddI[0] == ddI[1] == strtopdd\n"); else printf("ddI[0] == ddI[1] = #%lx %lx + %lx %lx\n= %.17g + %17.g\n", @@ -170,9 +164,9 @@ main(Void) U ((ULong*)ddI)[4+_0], U ((ULong*)ddI)[4+_1], U ((ULong*)ddI)[6+_0], U ((ULong*)ddI)[6+_1], ddI[2], ddI[3]); - if (ddI[0] == dd[0] && ddI[1] == dd[1]) + if (ddI[0] == u.dd[0] && ddI[1] == u.dd[1]) printf("ddI[0] == strtod\n"); - else if (ddI[2] == dd[0] && ddI[3] == dd[1]) + else if (ddI[2] == u.dd[0] && ddI[3] == u.dd[1]) printf("ddI[1] == strtod\n"); else printf("**** Both differ from strtopdd ****\n"); |
