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375ecf678c
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
64 lines
1.1 KiB
C
64 lines
1.1 KiB
C
#define TFM_DEFINES
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#include "fp_sqr_comba.c"
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#if defined(TFM_SQR4) && FP_SIZE >= 8
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void fp_sqr_comba4(fp_int *A, fp_int *B)
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{
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fp_digit *a, b[8], c0, c1, c2, sc0, sc1, sc2;
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#ifdef TFM_ISO
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fp_word tt;
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#endif
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a = A->dp;
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COMBA_START;
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/* clear carries */
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CLEAR_CARRY;
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/* output 0 */
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SQRADD(a[0],a[0]);
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COMBA_STORE(b[0]);
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/* output 1 */
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CARRY_FORWARD;
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SQRADD2(a[0], a[1]);
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COMBA_STORE(b[1]);
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/* output 2 */
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CARRY_FORWARD;
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SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]);
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COMBA_STORE(b[2]);
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/* output 3 */
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CARRY_FORWARD;
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SQRADD2(a[0], a[3]); SQRADD2(a[1], a[2]);
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COMBA_STORE(b[3]);
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/* output 4 */
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CARRY_FORWARD;
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SQRADD2(a[1], a[3]); SQRADD(a[2], a[2]);
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COMBA_STORE(b[4]);
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/* output 5 */
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CARRY_FORWARD;
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SQRADD2(a[2], a[3]);
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COMBA_STORE(b[5]);
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/* output 6 */
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CARRY_FORWARD;
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SQRADD(a[3], a[3]);
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COMBA_STORE(b[6]);
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COMBA_STORE2(b[7]);
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COMBA_FINI;
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B->used = 8;
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B->sign = FP_ZPOS;
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memcpy(B->dp, b, 8 * sizeof(fp_digit));
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fp_clamp(B);
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}
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#endif
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/* $Source$ */
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/* $Revision$ */
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/* $Date$ */
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