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 30711-c92306d4b4) Lines: 1467 1530 95.9 % Date: 2026-02-24 09:25:14 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	15205
_sqrtnr	22597
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48570
realroots	50627
ZX_sturm_irred	116586
ZX_sturm_i	122981
polsolve	166698
split_pols	166700
splitcauchy	166700
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296179
_gen_zero	326027
fix_roots1	398352
conformal_mapping	467808
split_1	467809
split_0_1	468169
split_0_2	468170
logradius	493856
split_2	493856
split_fromU	493857
parameters	493858
update_radius	493858
optimize_split	493859
split_0	494223
refine_F	502243
dft	502247
all_roots	535888
clean_roots	535931
a_posteriori_errors	536986
fix_roots	536987
mygprec_special	536993
logmodulus	606569
logpre_modulus	606572
abs_update_r	778564
ind_maxlog2	902471
isexactscalar	931714
isreal	961667
initdft	996105
dual_modulus	1012236
usp	1125930
ZX_sturmpart	1128177
check_ab	1178803
tocomplex	1213225
isvalidcoeff	1228149
ZX_Uspensky	1313681
conformal_basecase	1403540
conformal_pol	1403646
fujiwara_bound_real	1406665
split_complete	1525435
homothetie	1609692
append_clone	1613547
logmin_modulus	1614377
root_error	1911662
mygprecrc_special	2178304
ZX_rescale2prim	2233538
cmp_complex_appr	2237360
fujiwara_bound	2271076
checkbound	2354736
refine_H	2460021
scalepol	4288338
mygprec_absolute	4337676
_mp_mul	4374655
logmax_modulus	4449712
bkeval_single_power	5235202
splitpoleval	5236264
newton_polygon	5505433
X2XP1	5989777
_mp_sqr	6298493
dblexp	6547527
quicktofp	6976972
RgX_gtofp_bit	7029326
abs_update	8004093
mydbllogr	9545025
homothetie2n	9954820
_gen_nored	11210516
eval_rel_pol	13135025
fft	14155939
_gen_one	14473858
ZX_to_ZiX	16451622
pol_to_gaussint	17584628
_mp_add	24665743
_mp_cmul	34781519
myshiftrc	35497344
homothetie_gauss	36493418
findpower	40947431
lower_bound	40947632
graeffe	49504517
mydbllog2r	56172646
mygprec	63746026
ZiX_sqr	99023933
myshiftic	135861580
mygprecrc	215133410
mydbllog2i	226405873
dbllog2	302092097

Generated by: LCOV version 1.16