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 30535-d1c72762fc) Lines: 1467 1530 95.9 % Date: 2025-10-30 09:21:33 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35901
ZX_realroots_irred	48651
realroots	50627
ZX_sturm_irred	116776
ZX_sturm_i	123171
polsolve	166719
split_pols	166721
splitcauchy	166724
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267060
QX_complex_roots	296413
_gen_zero	326140
fix_roots1	398463
conformal_mapping	467918
split_1	467919
split_0_1	468276
split_0_2	468277
logradius	493963
update_radius	493965
split_2	493967
optimize_split	493969
parameters	493969
split_fromU	493970
split_0	494330
refine_F	502354
dft	502360
all_roots	536116
clean_roots	536164
fix_roots	537221
a_posteriori_errors	537222
mygprec_special	537224
logpre_modulus	606743
logmodulus	606744
abs_update_r	778672
ind_maxlog2	902672
isexactscalar	931714
isreal	961884
initdft	996328
dual_modulus	1012456
usp	1126051
ZX_sturmpart	1128261
check_ab	1178888
tocomplex	1213947
isvalidcoeff	1230235
ZX_Uspensky	1313899
conformal_basecase	1403862
conformal_pol	1403980
fujiwara_bound_real	1406921
split_complete	1525876
homothetie	1610083
append_clone	1614166
logmin_modulus	1614736
root_error	1912569
mygprecrc_special	2179166
ZX_rescale2prim	2233872
cmp_complex_appr	2238517
fujiwara_bound	2271789
checkbound	2354906
refine_H	2460430
scalepol	4289308
mygprec_absolute	4339856
_mp_mul	4374488
logmax_modulus	4450784
splitpoleval	5235505
bkeval_single_power	5235552
newton_polygon	5507110
X2XP1	5990582
_mp_sqr	6298218
dblexp	6548956
quicktofp	6979007
RgX_gtofp_bit	7031487
abs_update	8005511
mydbllogr	9546950
homothetie2n	9957423
_gen_nored	11200724
eval_rel_pol	13138077
fft	14159075
_gen_one	14472011
ZX_to_ZiX	16454972
pol_to_gaussint	17588815
_mp_add	24660974
_mp_cmul	34763543
myshiftrc	35505479
homothetie_gauss	36496523
lower_bound	40954394
findpower	40955049
graeffe	49504720
mydbllog2r	56171688
mygprec	63756618
ZiX_sqr	99024605
myshiftic	135796314
mygprecrc	215178147
mydbllog2i	226428064
dbllog2	302081621

Generated by: LCOV version 1.16