bump threshold

flintlib · Jul 15, 2024 · b2aeff6 · b2aeff6
1 parent 79b7c89
commit b2aeff6
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/nfloat/mat_mul.c b/src/nfloat/mat_mul.c
@@ -854,7 +854,12 @@ nfloat_mat_mul_block(gr_mat_t C, const gr_mat_t A, const gr_mat_t B, slong min_b
 }
 
 /* Minimum precision for using fixed-point arithmetic */
-#define NFLOAT_MAT_MUL_FIXED_CUTOFF 192
+
+/* TODO: for *unsigned* matrices, there is a speedup already for
+   prec = 192. Consider inlining fixed-point additions/subtractions for
+   4 and 5 limbs to extend this to general matrices. */
+/* #define NFLOAT_MAT_MUL_FIXED_CUTOFF 192 */
+#define NFLOAT_MAT_MUL_FIXED_CUTOFF 320
 
 /* first cutoff:  classical -> fixed_classical
    second cutoff: fixed_classical -> waksman */