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 30822-5d69697d32) Lines: 1467 1530 95.9 % Date: 2026-04-17 09:24:44 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296304
RgX_gtofp_bit	7048759
RgX_normalize1	35705
X2XP1	5990358
ZX_Uspensky	1313927
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5439
ZX_realroots_irred	48564
ZX_rescale2prim	2233704
ZX_sturm	6395
ZX_sturm_i	123054
ZX_sturm_irred	116658
ZX_sturmpart	1128350
ZX_to_ZiX	16491453
ZiX_sqr	99219428
_gen_nored	11198531
_gen_one	14466289
_gen_zero	325966
_intervalcmp	0
_mp_add	24658902
_mp_cmul	34757212
_mp_mul	4374430
_mp_sqr	6297872
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	537475
abs_update	8021914
abs_update_r	780207
all_roots	536368
append_clone	1616252
bkeval_single_power	5234005
check_ab	1178977
checkbound	2355083
checkvalidpol	267228
clean_roots	536413
cleanroots	231763
cmp_complex_appr	2241705
conformal_basecase	1406574
conformal_mapping	468821
conformal_pol	1406693
dblexp	6563139
dbllog2	303934252
dft	503372
dual_modulus	1014586
eval_rel_pol	13169781
fft	14196523
fft2	7462
findpower	41028671
fix_roots	537482
fix_roots1	398803
fujiwara_bound	2272862
fujiwara_bound_real	1406991
graeffe	49605242
homothetie	1613736
homothetie2n	9979824
homothetie_gauss	36561179
ind_maxlog2	904434
initdft	998342
isexactpol	240117
isexactscalar	934122
isreal	963793
isvalidcoeff	1230557
logmax_modulus	4458903
logmin_modulus	1617792
logmodulus	608286
logpre_modulus	608284
logradius	494970
lower_bound	41029039
mydbllog2i	226775234
mydbllog2r	57617772
mydbllogr	9566666
mygprec	63866525
mygprec_absolute	4344326
mygprec_special	537490
mygprecrc	215569306
mygprecrc_special	2181518
myshiftic	136100290
myshiftrc	35579986
newton_polygon	5521262
optimize_split	494972
parameters	494969
pol_to_gaussint	17628657
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166700
quicktofp	6984086
realroots	50627
refine_F	503366
refine_H	2464787
root_error	1914490
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297746
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495341
split_0_1	469190
split_0_2	469190
split_1	468821
split_2	494970
split_complete	1528159
split_fromU	494972
split_pols	166703
splitcauchy	166700
splitpoleval	5234338
tocomplex	1215954
update_radius	494970
usp	1126037

Generated by: LCOV version 1.16