Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-03-30 09:27:24 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296306
RgX_gtofp_bit	7048045
RgX_normalize1	35705
X2XP1	5991073
ZX_Uspensky	1313940
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48576
ZX_rescale2prim	2233997
ZX_sturm	6395
ZX_sturm_i	123073
ZX_sturm_irred	116678
ZX_sturmpart	1128336
ZX_to_ZiX	16491106
ZiX_sqr	99231865
_gen_nored	11201549
_gen_one	14473878
_gen_zero	326041
_intervalcmp	0
_mp_add	24661864
_mp_cmul	34765189
_mp_mul	4374481
_mp_sqr	6298657
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	537468
abs_update	8020904
abs_update_r	780128
all_roots	536366
append_clone	1616160
bkeval_single_power	5236028
check_ab	1178963
checkbound	2355056
checkvalidpol	267214
clean_roots	536414
cleanroots	231763
cmp_complex_appr	2241466
conformal_basecase	1406459
conformal_mapping	468783
conformal_pol	1406577
dblexp	6562464
dbllog2	304009177
dft	503321
dual_modulus	1014479
eval_rel_pol	13168439
fft	14193956
fft2	7462
findpower	41030587
fix_roots	537470
fix_roots1	398789
fujiwara_bound	2272050
fujiwara_bound_real	1407009
graeffe	49604443
homothetie	1613558
homothetie2n	9979021
homothetie_gauss	36566007
ind_maxlog2	904344
initdft	998249
isexactpol	240103
isexactscalar	934017
isreal	963715
isvalidcoeff	1230445
logmax_modulus	4458643
logmin_modulus	1617700
logmodulus	608215
logpre_modulus	608218
logradius	494926
lower_bound	41030180
mydbllog2i	226871950
mydbllog2r	57612208
mydbllogr	9565238
mygprec	63862724
mygprec_absolute	4344196
mygprec_special	537474
mygprecrc	215574331
mygprecrc_special	2181413
myshiftic	136079648
myshiftrc	35576890
newton_polygon	5520747
optimize_split	494931
parameters	494930
pol_to_gaussint	17627103
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166705
quicktofp	6981626
realroots	50627
refine_F	503318
refine_H	2464595
root_error	1914396
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297388
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495299
split_0_1	469151
split_0_2	469152
split_1	468784
split_2	494931
split_complete	1528064
split_fromU	494931
split_pols	166707
splitcauchy	166714
splitpoleval	5235825
tocomplex	1215869
update_radius	494928
usp	1126181

Generated by: LCOV version 1.16