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 30483-b6b1f87815) Lines: 1467 1530 95.9 % Date: 2025-09-12 09:24:16 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	5383
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15272
_sqrtnr	22707
polrootsbound_i	27291
polrootsbound	27298
RgX_normalize1	35885
ZX_realroots_irred	48635
realroots	50627
ZX_sturm_irred	116768
ZX_sturm_i	123163
split_pols	166674
polsolve	166682
splitcauchy	166684
solve_exact_pol	231145
cleanroots	231749
isexactpol	239739
roots_com	239739
roots_aux	239767
checkvalidpol	267044
QX_complex_roots	296374
_gen_zero	326152
fix_roots1	398398
conformal_mapping	467908
split_1	467908
split_0_1	468227
split_0_2	468227
logradius	493951
optimize_split	493957
split_2	493957
split_fromU	493957
parameters	493958
update_radius	493958
split_0	494279
refine_F	502339
dft	502346
all_roots	536069
clean_roots	536114
a_posteriori_errors	537111
fix_roots	537112
mygprec_special	537120
logmodulus	606735
logpre_modulus	606739
abs_update_r	778671
ind_maxlog2	902642
isexactscalar	931700
isreal	961863
initdft	996304
dual_modulus	1012428
usp	1126068
ZX_sturmpart	1128262
check_ab	1178889
tocomplex	1213847
isvalidcoeff	1230089
ZX_Uspensky	1313891
conformal_basecase	1403835
conformal_pol	1403956
fujiwara_bound_real	1406903
split_complete	1525666
homothetie	1610055
append_clone	1613941
logmin_modulus	1614775
root_error	1912285
mygprecrc_special	2178434
ZX_rescale2prim	2233805
cmp_complex_appr	2238511
fujiwara_bound	2271667
checkbound	2354908
refine_H	2460323
scalepol	4289204
mygprec_absolute	4339234
_mp_mul	4373723
logmax_modulus	4450805
splitpoleval	5234228
bkeval_single_power	5234752
newton_polygon	5507094
X2XP1	5990470
_mp_sqr	6297221
dblexp	6548856
quicktofp	6978855
RgX_gtofp_bit	7031321
abs_update	8004991
mydbllogr	9546158
homothetie2n	9957517
_gen_nored	11197654
eval_rel_pol	13138005
fft	14159139
_gen_one	14468937
ZX_to_ZiX	16455786
pol_to_gaussint	17588832
_mp_add	24658949
_mp_cmul	34758092
myshiftrc	35506799
homothetie_gauss	36501731
lower_bound	40957940
findpower	40958738
graeffe	49507904
mydbllog2r	56754537
mygprec	63754960
ZiX_sqr	99045255
myshiftic	135823883
mygprecrc	215179300
mydbllog2i	226439658
dbllog2	302678693

Generated by: LCOV version 1.16