clamav/libclamav/tomsfastmath/bin/fp_to_signed_bin.c
Micah Snyder 375ecf678c Update vendored TomsFastMath code to 0.13.1
Update the vendored TomsFastMath (TFM) library to v0.13.1.

Resolves: https://bugzilla.clamav.net/show_bug.cgi?id=11992

I removed compatibility macro's from when libTomMath was used.
This required removing a bunch of faux-error handling because
the fast-math equivalent functions return void, and cannot fail.

The previous version used had named the header "bignum_fast.h"
instead of "tfm.h" and had customizations in that header to enable
TFM_CHECK all the time, and also TFM_NO_ASM if __GNUC__ not defined
or if the system isn't 64bit architecture. This update uses tfm.h
as-is, and has CMake define TFM_CHECK and TFM_NO_ASM as needed.

I've kept bignum.h as an interface to including tfm.h so that in
the future we can more easily add support for system-installed
TomsFastMath instead of the vendored one, taking inspiration from
Debian's patch to support system-TomsFastMath.

See: https://salsa.debian.org/clamav-team/clamav/-/blob/unstable/debian/patches/add-support-for-system-tomsfastmath.patch
2022-02-10 12:54:23 -07:00

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C

/* TomsFastMath, a fast ISO C bignum library.
*
* This project is meant to fill in where LibTomMath
* falls short. That is speed ;-)
*
* This project is public domain and free for all purposes.
*
* Tom St Denis, tomstdenis@gmail.com
*/
#include <tfm_private.h>
void fp_to_signed_bin(fp_int *a, unsigned char *b)
{
fp_to_unsigned_bin (a, b + 1);
b[0] = (unsigned char) ((a->sign == FP_ZPOS) ? 0 : 1);
}
/* $Source$ */
/* $Revision$ */
/* $Date$ */