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author | John Wiegley <johnw@newartisans.com> | 2007-04-15 12:55:22 +0000 |
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committer | John Wiegley <johnw@newartisans.com> | 2008-04-13 03:35:33 -0400 |
commit | b27b34a76fa16fcb96632a5bf245f3876183c479 (patch) | |
tree | fe386b51289569218b776e0d7453b161f071db70 /gdtoa/strtorf.c | |
parent | b307f741c493652d64a6dde1df424c07eb698cb4 (diff) | |
download | fork-ledger-b27b34a76fa16fcb96632a5bf245f3876183c479.tar.gz fork-ledger-b27b34a76fa16fcb96632a5bf245f3876183c479.tar.bz2 fork-ledger-b27b34a76fa16fcb96632a5bf245f3876183c479.zip |
Added a reference to gdtoa, for doing expected conversion of double to amount.
Diffstat (limited to 'gdtoa/strtorf.c')
-rw-r--r-- | gdtoa/strtorf.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/gdtoa/strtorf.c b/gdtoa/strtorf.c new file mode 100644 index 00000000..46b0ba2e --- /dev/null +++ b/gdtoa/strtorf.c @@ -0,0 +1,89 @@ +/**************************************************************** + +The author of this software is David M. Gay. + +Copyright (C) 1998, 2000 by Lucent Technologies +All Rights Reserved + +Permission to use, copy, modify, and distribute this software and +its documentation for any purpose and without fee is hereby +granted, provided that the above copyright notice appear in all +copies and that both that the copyright notice and this +permission notice and warranty disclaimer appear in supporting +documentation, and that the name of Lucent or any of its entities +not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior +permission. + +LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. +IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY +SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER +IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF +THIS SOFTWARE. + +****************************************************************/ + +/* Please send bug reports to David M. Gay (dmg at acm dot org, + * with " at " changed at "@" and " dot " changed to "."). */ + +#include "gdtoaimp.h" + + void +#ifdef KR_headers +ULtof(L, bits, exp, k) ULong *L; ULong *bits; Long exp; int k; +#else +ULtof(ULong *L, ULong *bits, Long exp, int k) +#endif +{ + switch(k & STRTOG_Retmask) { + case STRTOG_NoNumber: + case STRTOG_Zero: + *L = 0; + break; + + case STRTOG_Normal: + case STRTOG_NaNbits: + L[0] = bits[0] & 0x7fffff | exp + 0x7f + 23 << 23; + break; + + case STRTOG_Denormal: + L[0] = bits[0]; + break; + + case STRTOG_Infinite: + L[0] = 0x7f800000; + break; + + case STRTOG_NaN: + L[0] = f_QNAN; + } + if (k & STRTOG_Neg) + L[0] |= 0x80000000L; + } + + int +#ifdef KR_headers +strtorf(s, sp, rounding, f) CONST char *s; char **sp; int rounding; float *f; +#else +strtorf(CONST char *s, char **sp, int rounding, float *f) +#endif +{ + static FPI fpi0 = { 24, 1-127-24+1, 254-127-24+1, 1, SI }; + FPI *fpi, fpi1; + ULong bits[1]; + Long exp; + int k; + + fpi = &fpi0; + if (rounding != FPI_Round_near) { + fpi1 = fpi0; + fpi1.rounding = rounding; + fpi = &fpi1; + } + k = strtodg(s, sp, fpi, &exp, bits); + ULtof((ULong*)f, bits, exp, k); + return k; + } |