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) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 94.1 % 1561 1469 Test Date: 2026-07-23 17:04:59 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	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	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15274
_sqrtnr	22877
polrootsbound_i	27798
polrootsbound	27805
RgX_normalize1	36406
ZX_realroots_irred	48669
realroots	50627
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166982
split_pols	166982
splitcauchy	166982
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268041
QX_complex_roots	297212
_gen_zero	326093
fix_roots1	398950
conformal_mapping	469140
split_1	469140
split_0_1	469512
split_0_2	469512
logradius	495267
optimize_split	495267
parameters	495267
split_2	495267
split_fromU	495267
update_radius	495267
split_0	495639
dft	503708
refine_F	503708
all_roots	537399
clean_roots	537441
a_posteriori_errors	538499
fix_roots	538499
mygprec_special	538499
logmodulus	608822
logpre_modulus	608822
abs_update_r	781158
ind_maxlog2	904868
isexactscalar	934563
isreal	964407
initdft	998975
dual_modulus	1015231
usp	1127972
ZX_sturmpart	1129084
check_ab	1179711
tocomplex	1219405
isvalidcoeff	1235239
ZX_Uspensky	1315181
conformal_basecase	1407539
conformal_pol	1407658
fujiwara_bound_real	1408294
split_complete	1529777
homothetie	1614928
logmin_modulus	1618136
append_clone	1618804
root_error	1919275
mygprecrc_special	2185073
ZX_rescale2prim	2237874
cmp_complex_appr	2249859
fujiwara_bound	2276778
checkbound	2356552
refine_H	2465973
scalepol	4300641
mygprec_absolute	4356165
_mp_mul	4430341
logmax_modulus	4461126
bkeval_single_power	5250141
splitpoleval	5250141
newton_polygon	5526612
X2XP1	6001446
_mp_sqr	6349508
dblexp	6569390
quicktofp	6998086
RgX_gtofp_bit	7056036
abs_update	8028236
mydbllogr	9573924
homothetie2n	9987738
_gen_nored	11267442
eval_rel_pol	13181373
fft	14225253
_gen_one	14524003
ZX_to_ZiX	16455376
pol_to_gaussint	17642499
_mp_add	24940866
_mp_cmul	35115055
myshiftrc	35616065
homothetie_gauss	36602777
findpower	41063903
lower_bound	41063903
graeffe	49673787
mydbllog2r	58105862
mygprec	63975816
ZiX_sqr	99347574
myshiftic	136510983
mygprecrc	215725291
mydbllog2i	227081292
dbllog2	304772662

Generated by: LCOV version 2.0-1