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 30604-e5d817ee12) Lines: 1467 1530 95.9 % Date: 2026-01-09 09:21:43 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	15202
_sqrtnr	22594
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48564
realroots	50627
ZX_sturm_irred	116579
ZX_sturm_i	122974
split_pols	166686
polsolve	166687
splitcauchy	166703
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296157
_gen_zero	325998
fix_roots1	398345
conformal_mapping	467788
split_1	467789
split_0_1	468149
split_0_2	468150
logradius	493833
parameters	493836
split_2	493838
update_radius	493840
optimize_split	493841
split_fromU	493841
split_0	494202
refine_F	502226
dft	502230
all_roots	535864
clean_roots	535915
a_posteriori_errors	536965
fix_roots	536967
mygprec_special	536979
logmodulus	606523
logpre_modulus	606530
abs_update_r	778504
ind_maxlog2	902439
isexactscalar	931714
isreal	961628
initdft	996066
dual_modulus	1012185
usp	1125951
ZX_sturmpart	1128235
check_ab	1178862
tocomplex	1213123
isvalidcoeff	1228149
ZX_Uspensky	1313731
conformal_basecase	1403473
conformal_pol	1403594
fujiwara_bound_real	1406701
split_complete	1525370
homothetie	1609598
append_clone	1613472
logmin_modulus	1614345
root_error	1911572
mygprecrc_special	2178220
ZX_rescale2prim	2233658
cmp_complex_appr	2237226
fujiwara_bound	2270985
checkbound	2354854
refine_H	2459929
scalepol	4288188
mygprec_absolute	4337366
_mp_mul	4374367
logmax_modulus	4449534
bkeval_single_power	5234712
splitpoleval	5235226
newton_polygon	5505030
X2XP1	5990059
_mp_sqr	6298061
dblexp	6547162
quicktofp	6976641
RgX_gtofp_bit	7028796
abs_update	8003488
mydbllogr	9544264
homothetie2n	9954226
_gen_nored	11199366
eval_rel_pol	13134033
fft	14154511
_gen_one	14469439
ZX_to_ZiX	16451165
pol_to_gaussint	17583454
_mp_add	24660839
_mp_cmul	34759406
myshiftrc	35494173
homothetie_gauss	36487717
lower_bound	40944001
findpower	40944955
graeffe	49496798
mydbllog2r	56169515
mygprec	63741124
ZiX_sqr	99007785
myshiftic	135803616
mygprecrc	215122494
mydbllog2i	226367802
dbllog2	302040664

Generated by: LCOV version 1.16