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 30547-1b347192b6) Lines: 1467 1530 95.9 % Date: 2025-11-12 09:22:59 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	15274
_sqrtnr	22709
polrootsbound_i	27292
polrootsbound	27299
RgX_normalize1	35900
ZX_realroots_irred	48652
realroots	50627
ZX_sturm_irred	116776
ZX_sturm_i	123171
polsolve	166715
split_pols	166721
splitcauchy	166727
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267059
QX_complex_roots	296421
_gen_zero	326122
fix_roots1	398473
conformal_mapping	467927
split_1	467929
split_0_2	468288
split_0_1	468289
logradius	493978
split_2	493981
optimize_split	493983
parameters	493983
split_fromU	493983
update_radius	493983
split_0	494346
refine_F	502370
dft	502373
all_roots	536126
clean_roots	536168
a_posteriori_errors	537226
fix_roots	537229
mygprec_special	537231
logmodulus	606767
logpre_modulus	606768
abs_update_r	778690
ind_maxlog2	902687
isexactscalar	931714
isreal	961911
initdft	996355
dual_modulus	1012478
usp	1126004
ZX_sturmpart	1128207
check_ab	1178833
tocomplex	1213971
isvalidcoeff	1230226
ZX_Uspensky	1313851
conformal_basecase	1403898
conformal_pol	1404017
fujiwara_bound_real	1406882
split_complete	1525922
homothetie	1610128
append_clone	1614198
logmin_modulus	1614802
root_error	1912591
mygprecrc_special	2179204
ZX_rescale2prim	2233752
cmp_complex_appr	2238552
fujiwara_bound	2271750
checkbound	2354796
refine_H	2460520
scalepol	4289434
mygprec_absolute	4340024
_mp_mul	4374482
logmax_modulus	4450954
splitpoleval	5235508
bkeval_single_power	5236051
newton_polygon	5507301
X2XP1	5990270
_mp_sqr	6298251
dblexp	6549167
quicktofp	6979084
RgX_gtofp_bit	7031717
abs_update	8005451
mydbllogr	9546923
homothetie2n	9957896
_gen_nored	11198827
eval_rel_pol	13138512
fft	14159616
_gen_one	14473149
ZX_to_ZiX	16457536
pol_to_gaussint	17589541
_mp_add	24660234
_mp_cmul	34760260
myshiftrc	35507540
homothetie_gauss	36498292
lower_bound	40956676
findpower	40956927
graeffe	49505052
mydbllog2r	56182399
mygprec	63759087
ZiX_sqr	99033621
myshiftic	135809309
mygprecrc	215194806
mydbllog2i	226416626
dbllog2	302077505

Generated by: LCOV version 1.16