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 30862-ea47bd413c) Lines: 1467 1530 95.9 % Date: 2026-05-05 09:26:54 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296338
RgX_gtofp_bit	7048867
RgX_normalize1	35838
X2XP1	5990897
ZX_Uspensky	1313950
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5439
ZX_realroots_irred	48652
ZX_rescale2prim	2233912
ZX_sturm	6395
ZX_sturm_i	123109
ZX_sturm_irred	116714
ZX_sturmpart	1128319
ZX_to_ZiX	16490116
ZiX_sqr	99230835
_gen_nored	11201318
_gen_one	14475145
_gen_zero	326031
_intervalcmp	0
_mp_add	24662461
_mp_cmul	34764785
_mp_mul	4375512
_mp_sqr	6299558
_mp_sub	0
_sqrtnr	22667
a_posteriori_errors	537512
abs_update	8021274
abs_update_r	780223
all_roots	536411
append_clone	1616315
bkeval_single_power	5236609
check_ab	1178946
checkbound	2355021
checkvalidpol	267361
clean_roots	536453
cleanroots	231763
cmp_complex_appr	2241693
conformal_basecase	1406569
conformal_mapping	468819
conformal_pol	1406687
dblexp	6563119
dbllog2	303898115
dft	503367
dual_modulus	1014565
eval_rel_pol	13169790
fft	14196261
fft2	7462
findpower	41030442
fix_roots	537511
fix_roots1	398823
fujiwara_bound	2274217
fujiwara_bound_real	1407052
graeffe	49604621
homothetie	1613723
homothetie2n	9979987
homothetie_gauss	36564775
ind_maxlog2	904407
initdft	998334
isexactpol	240117
isexactscalar	934122
isreal	963784
isvalidcoeff	1231117
logmax_modulus	4458945
logmin_modulus	1617773
logmodulus	608293
logpre_modulus	608292
logradius	494966
lower_bound	41030900
mydbllog2i	226758910
mydbllog2r	57629148
mydbllogr	9566055
mygprec	63865343
mygprec_absolute	4344593
mygprec_special	537518
mygprecrc	215565716
mygprecrc_special	2181618
myshiftic	136069695
myshiftrc	35580186
newton_polygon	5521382
optimize_split	494968
parameters	494969
pol_to_gaussint	17628661
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166747
quicktofp	6988253
realroots	50627
refine_F	503366
refine_H	2464693
root_error	1914579
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297738
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495338
split_0_1	469186
split_0_2	469186
split_1	468818
split_2	494966
split_complete	1528191
split_fromU	494968
split_pols	166742
splitcauchy	166748
splitpoleval	5236073
tocomplex	1216025
update_radius	494969
usp	1126159

Generated by: LCOV version 1.16